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X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
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TZID:UTC
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DTSTART:20230101T000000
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BEGIN:VEVENT
DTSTART;TZID=UTC:20231128T160000
DTEND;TZID=UTC:20231128T170000
DTSTAMP:20260414T185207
CREATED:20231121T013415Z
LAST-MODIFIED:20231127T165301Z
UID:2426-1701187200-1701190800@rpm.physics.lbl.gov
SUMMARY:Speaker: Lee Hagaman (University of Chicago) – Title: Investigating Short-Baseline Neutrino Anomalies Using MicroBooNE
DESCRIPTION:Research Progress Meeting \nDate: November 28\, 2023 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Lee Hagaman (University of Chicago) \nTitle: Investigating Short-Baseline Neutrino Anomalies Using MicroBooNE\n \nAbstract: The MicroBooNE experiment is a liquid argon time projection chamber (LArTPC) in the Booster Neutrino Beam at Fermilab. One of its primary goals is to address the 4.8 sigma MiniBooNE Low Energy Excess (LEE). Leveraging the unique capabilities of LArTPC technology to identify hadronic activity and separate photon and electron showers\, MicroBooNE has achieved a search for an electron neutrino excess (potentially due to a sterile neutrino)\, as well as a search for a single photon excess from neutral current Delta radiative decays. In this talk\, we will present a comprehensive overview of these results\, as well as recent advancements toward new searches for single photons and electron-positron pairs as explanations of the MiniBooNE LEE. These include a more sensitive search for Delta radiative decays\, a search for coherent-like single photon production\, an inclusive single photon search\, and searches for electron-positron pairs from dark sector models. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-lee-hagaman-university-of-chicago-title-investigating-short-baseline-neutrino-anomalies-using-microboone/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20231130T160000
DTEND;TZID=UTC:20231130T170000
DTSTAMP:20260414T185207
CREATED:20231127T190021Z
LAST-MODIFIED:20231127T190021Z
UID:2433-1701360000-1701363600@rpm.physics.lbl.gov
SUMMARY:Speaker: Michael MacKenzie (Northwestern University) - Title: Searches for Charged Lepton Flavor Violation at CMS and Mu2e
DESCRIPTION:Research Progress Meeting \nDate: November 30\, 2023 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Michael MacKenzie (Northwestern University) \nTitle: Searches for Charged Lepton Flavor Violation at CMS and Mu2e\n \nAbstract: Neutrino oscillations have shown that lepton flavor is not a conserved quantity. Charged lepton flavor violation (CLFV) is suppressed by the small neutrino masses well below what is experimentally observable\, though new physics models predict higher rates of CLFV. I will discuss a current search at the CMS experiment for the CLFV decay of the Z boson\, focusing on the search for Z→e µ. I will also discuss the upcoming search for CLFV µ− → e− conversion at the Mu2e experiment at FNAL. The Mu2e experiment aims to improve the sensitivity to µ− → e− conversion by a factor of 10\,000. I will present the expected µ− → e− conversion sensitivity during Run 1 at Mu2e. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-michael-mackenzie-northwestern-university-title-searches-for-charged-lepton-flavor-violation-at-cms-and-mu2e/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20231205T160000
DTEND;TZID=UTC:20231205T170000
DTSTAMP:20260414T185207
CREATED:20231127T222112Z
LAST-MODIFIED:20231127T222112Z
UID:2436-1701792000-1701795600@rpm.physics.lbl.gov
SUMMARY:Speaker: Michael Williams (University of Michigan) - Title: Searches for Particle Dark Matter with LZ and TESSERACT
DESCRIPTION:Research Progress Meeting \nDate: December 5\, 2023 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Michael Williams (University of Michigan) \nTitle: Searches for Particle Dark Matter with LZ and TESSERACT\n \nAbstract: The search for particle dark matter is one of the primary challenges in modern physics. Direct detection experiments typically rely on measuring signals produced when dark matter particles recoil off a detector target. In this talk\, I will first discuss the LUX-ZEPLIN (LZ) experiment\, which uses a dual-phase xenon time projection chamber to look for WIMP dark matter that recoils off the xenon nucleus. I will discuss LZ detector construction\, first WIMP search results\, and limits on effective field theory (EFT) searches of dark matter. I will then discuss the search for low-mass dark matter with TESSERACT; this encompasses interactions with two types of novel\, ultra-sensitive detectors – SPICE and HeRALD. Both SPICE and HeRALD use transition edge sensors (TESs) for cryogenic readout\, while using different targets: polar crystals and superfluid helium-4\, respectively. I will describe the development and first measurements of new Iridium-Platinum (IrPt) TESs and the commissioning of the new HeRALD detector at LBNL. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-michael-williams-university-of-michigan-title-searches-for-particle-dark-matter-with-lz-and-tesseract/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20231207T160000
DTEND;TZID=UTC:20231207T170000
DTSTAMP:20260414T185207
CREATED:20231201T191816Z
LAST-MODIFIED:20231201T191816Z
UID:2442-1701964800-1701968400@rpm.physics.lbl.gov
SUMMARY:Speaker: Gerrit Farren (Cambridge) - Title: The Atacama Cosmology Telescope: Probing the large scale structure with ACT DR6 CMB lensing and cross-correlation with unWISE
DESCRIPTION:Research Progress Meeting \nDate: December 7\, 2023 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Gerrit Farren (Cambridge) \nTitle: The Atacama Cosmology Telescope: Probing the large scale structure with ACT DR6 CMB lensing and cross-correlation with unWISE\n \nAbstract: I will present work on probing the large scale structure of the universe using CMB lensing from the upcoming Data Release 6 of the Atacama Cosmology Telescope (ACT) and cross-correlations with galaxies from the unWISE galaxy catalog. My talk will focus on how our highly competitive constraints from CMB lensing cross-correlations can provide insight into the widely discussed “S8/sigma8 tension”. For this purpose I will briefly introduce the high fidelity CMB lensing reconstruction obtained by the ACT Collaboration and results from the analysis of the lensing auto-correlation. I will discuss results from the cross-correlation between ACT CMB lensing and unWISE galaxies\, highlighting improvements to the analysis pipeline compared to previous work on the cross-correlation between Planck CMB lensing and unWISE by some of my collaborators (Krolewski et al. 2021). I will also touch on our recent work to extend such cross-correlation analyses beyond two-point correlations using the first detection of the galaxy-galaxy-CMB lensing bispectrum. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-gerrit-farren-cambridge-title-the-atacama-cosmology-telescope-probing-the-large-scale-structure-with-act-dr6-cmb-lensing-and-cross-correlation-with-unwise/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20231212T130000
DTEND;TZID=UTC:20231212T140000
DTSTAMP:20260414T185207
CREATED:20231207T173255Z
LAST-MODIFIED:20231207T173307Z
UID:2447-1702386000-1702389600@rpm.physics.lbl.gov
SUMMARY:Speaker: Christina Wang (Cal Tech) - Title: Search for New Physics with CMS and Quantum Sensors
DESCRIPTION:Research Progress Meeting \nDate: December 12\, 2023 \nTime: 1:00- 2:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Christina Wang (Cal Tech) \nTitle: Search for New Physics with CMS and Quantum Sensors\n \nAbstract: \nI will present two new highly complementary approaches to search for physics beyond the Standard Model. The searches are enabled by a first-of-its kind reconstruction technique to search for long-lived particles (LLPs) using the Compact Muon Solenoid (CMS) and by new advances in quantum sensing technology to search for axions. \nI will first discuss a search for physics beyond the Standard Model by searching for LLPs using a novel technique to reconstruct decays of LLPs in the CMS muon detectors. The innovative LLP reconstruction technique has been shown to be sensitive to a broad range of LLP decay modes and to LLP masses below GeV. The search yields competitive sensitivity for proper lifetime from 0.1m to 1000m with the full Run2 dataset recorded at the LHC. \nIn the second part of the talk\, I will discuss searching for axions with a low noise quantum sensor\, SNSPDs (superconducting nanowire single photon detectors). The BREAD (Broadband Reflector Experiment for Axion Detection) experiment searches for axions or dark photons using a parabolic mirror to focus axion-converted photons to the SNSPDs. The SNSPDs allow us to be sensitive to 0.04 – 1 eV axions and dark photons\, due to their sensitivity to 0.04 – 1 eV photons. In this talk\, I will present the progress towards a first stage dark photon pilot experiment with a focus on SNSPD characterization. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-christina-wang-cal-tech-title-search-for-new-physics-with-cms-and-quantum-sensors/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20231214T160000
DTEND;TZID=UTC:20231214T170000
DTSTAMP:20260414T185207
CREATED:20231208T155108Z
LAST-MODIFIED:20231208T155108Z
UID:2451-1702569600-1702573200@rpm.physics.lbl.gov
SUMMARY:Speaker: Deion Fellers (University of Oregon) - Title: FASER’s Search for Dark Photons and Neutrinos
DESCRIPTION:Research Progress Meeting \nDate: December 14\, 2023 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Deion Fellers (University of Oregon) \nTitle: FASER’s Search for Dark Photons and Neutrinos\n \nAbstract: FASER is an experiment at the LHC that is designed to search for light\, weakly-interacting particles produced in the far-forward direction from proton-proton collisions at the ATLAS interaction point (IP1). The detector is positioned 480 m downstream of IP1 and aligned with the beam collision axis\, where particles must traverse LHC magnets and approximately 100 m of rock and concrete before reaching FASER. The novel location of the experiment provides both a low background environment and a high-intensity flux of long-lived particles. This talk will provide an overview of the FASER detector and present our first physics results\, where we used a dataset collected at center-of-mass energy √s =13.6 TeV in 2022\, during LHC Run 3\, to directly observe neutrino interactions at a particle collider experiment for the first time and also to probe previously unconstrained phase space of the dark photon with couplings ϵ∼10−5−10−4 and masses ∼10 MeV – 100 MeV. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-deion-fellers-university-of-oregon-title-fasers-search-for-dark-photons-and-neutrinos/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20231219T160000
DTEND;TZID=UTC:20231219T170000
DTSTAMP:20260414T185207
CREATED:20231214T175021Z
LAST-MODIFIED:20231214T175021Z
UID:2456-1703001600-1703005200@rpm.physics.lbl.gov
SUMMARY:Speaker: Emily Perry (UCL) - Title: Towards the discovery of galactic dark matter: the LZ experiment and beyond
DESCRIPTION:Research Progress Meeting \nDate: December 19\, 2023 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Emily Perry (UCL) \nTitle: Towards the discovery of galactic dark matter: the LZ experiment and beyond\n \nAbstract: \nThe discovery of the nature of dark matter is internationally recognised as one of the highest priorities in science. Its discovery would bring forward a new era in physics and astronomy\, simultaneously solving the near 100 year old missing mass problem and delivering the first evidence of physics Beyond the Standard Model (BSM). Dual phase xenon (Xe) time projection chambers (TPCs) have been dominating the search for dark matter for the past 10 years. Now not only targeting WIMPs of mass > 3 GeV/c2\, but due to their scalability and advanced technologies\, boast world leading sensitivity to other BSM-physics and rare or exotic neutrino physics. \nThe LUX ZEPLIN (LZ) dark experiment operates at the Sanford Underground Research Facility in South Dakota and is the most sensitive and largest of all Xe TPCs ever constructed. In its first science run of only 60-livedays the experiment has set the world-leading constraints on the existence of WIMPs down to a mass of 9 GeV/c2. This seminar will highlight some of the key work that has led to this result with focus on some of my specific contributions. Giving an exciting glimpse of what the future holds for LZ\, I will present the innovative work that is being done on the ramp up to the next science results. I will also discuss both the short and long term future of LZ and the path to an historic dark matter discovery. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-emily-perry-ucl-title-towards-the-discovery-of-galactic-dark-matter-the-lz-experiment-and-beyond/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240118T160000
DTEND;TZID=UTC:20240118T170000
DTSTAMP:20260414T185207
CREATED:20240111T171253Z
LAST-MODIFIED:20240111T171253Z
UID:2471-1705593600-1705597200@rpm.physics.lbl.gov
SUMMARY:Speaker: Joseph Bramante (Queen's University) - Title: Back to the Future With High Mass Dark Matter
DESCRIPTION:Research Progress Meeting \nDate: January 18\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Joseph Bramante (Queen’s University) \nTitle: Back to the Future With High Mass Dark Matter \nAbstract: A number of theories predict that dark matter is a supermassive particle or composite state. Discovering dark matter in this high mass regime requires different approaches. I will survey recent developments\, including composite dark matter that produces unique signatures in underground experiments\, dark matter detectable through its fusion of nuclei in Antarctic ice\, and halo substructures heating neutron stars. I will also survey certain experiments from the 80s and 90s\, which still provide the best sensitivity to many varieties of high mass dark matter. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-joseph-bramante-queens-university-title-back-to-the-future-with-high-mass-dark-matter/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240125T080000
DTEND;TZID=UTC:20240125T170000
DTSTAMP:20260414T185207
CREATED:20240119T204659Z
LAST-MODIFIED:20240119T211506Z
UID:2475-1706169600-1706202000@rpm.physics.lbl.gov
SUMMARY:Speaker: Philip Harris (MIT) - Title: You can observe a lot by just watching (new AI strategies for the LHC and beyond)
DESCRIPTION:Research Progress Meeting \nDate: January 25\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Philip Harris (MIT) \nTitle: You can observe a lot by just watching (new AI strategies for the LHC and beyond) \nAbstract: With large amounts of data\, a Higgs boson discovery\, and world-leading constraints on an enormous amount of parameters and interactions\, the Large Hadron Collider has been a phenomenal tool. However\, it has reached the middle of life and is going through a mid-life crisis. We venture in a new direction to show how AI approaches are allowing us to do new\, unprecedented physics measurements\, leading to a mysterious deviation in Higgs boson production at high momentum. Moreover\, we show a new result built on contrastive learning and semi-supervised learning strategies where\, through physics-motivated choices\, we teach an AI to visualize many physics processes simultaneously\, allowing it to solve a variety of downstream tasks in one algorithm. The implications are far-reaching\, including a world-leading Higgs boson identification and new sensitive approaches in AI-based anomaly detection. Finally\, we show a dedicated path for the broad adoption of AI into all aspects of data processing at the Large Hadron Collider and other experiments\, including LIGO\, that are leading to faster\, better\, unprecedented results; the kind of results we believe can revitalize an aging accelerator. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-philip-harris-mit-title-you-can-observe-a-lot-by-just-watching-new-ai-strategies-for-the-lhc-and-beyond/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240201T160000
DTEND;TZID=UTC:20240201T170000
DTSTAMP:20260414T185207
CREATED:20240129T151055Z
LAST-MODIFIED:20240129T151055Z
UID:2482-1706803200-1706806800@rpm.physics.lbl.gov
SUMMARY:Speaker: Mariel Pettee (LBNL) - Title: Towards a Foundation Model for Fundamental Physics
DESCRIPTION:Research Progress Meeting \nDate: February 1\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Mariel Pettee (LBNL) \nTitle: Towards a Foundation Model for Fundamental Physics \nAbstract: The launch of ChatGPT in November 2022 ignited an ongoing worldwide conversation about the possible impacts of Large Language Models (LLMs) on the way we work. There is little doubt that LLMs will significantly influence many people’s jobs: one prominent study estimated that about 20% of the US workforce could soon see about 50% of their daily tasks influenced by these models. As scientists\, however\, the changes in our workflows since the advent of this technology have been relatively minor. \nWill this still be the case in 10 years? Could an analogous paradigm shift arise from a foundation model trained on a large amount of scientific data\, transforming the way we conduct our research? If so\, what can we learn from the development of other foundation models\, including LLMs\, in their evolution from specialists to (quasi-)generalists? In this talk\, I will present some recent work representing very early potential steps towards a foundation model of fundamental physics as well as perspectives on how we should strive to shape such a model to reflect our highest priorities as scientists.\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-mariel-pettee-lbnl-title-towards-a-foundation-model-for-fundamental-physics/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240206T160000
DTEND;TZID=UTC:20240206T170000
DTSTAMP:20260414T185207
CREATED:20240201T211146Z
LAST-MODIFIED:20240201T211146Z
UID:2485-1707235200-1707238800@rpm.physics.lbl.gov
SUMMARY:Speaker: Lindley Winslow (MIT) - Title: The Search for GUT-Scale Axions: Really Big Magnets and Quantum Sensing
DESCRIPTION:Research Progress Meeting \nDate: February 6\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Lindley Winslow (MIT) \nTitle: The Search for GUT-Scale Axions: Really Big Magnets and Quantum Sensing\n \nAbstract: \nThe particle nature of dark matter remains one of the great open questions in physics. There is a broad category of candidates whose mass is so light that they behave more as waves than as particles. The most well-known is the axion\, which has had a renaissance as a dark matter candidate as theoretical studies have improved our understanding of axion cosmology and advances in quantum sensing and cryogenics have opened new opportunities for detection. In this talk\, I will focus on the search for GUT-Scale axions\, the DMRadio Program and the results from the ABRACADABRA demonstrators. If time permits\, I will also discuss our other R&D efforts that span from searching for primordial black holes to coupling quantum dots to SNSPDs. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-lindley-winslow-mit-title-the-search-for-gut-scale-axions-really-big-magnets-and-quantum-sensing/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240215T160000
DTEND;TZID=UTC:20240215T170000
DTSTAMP:20260414T185207
CREATED:20240209T172747Z
LAST-MODIFIED:20240209T172747Z
UID:2493-1708012800-1708016400@rpm.physics.lbl.gov
SUMMARY:Speaker: William Coulton (Cambridge) - Title: Novel cosmological tests with precision CMB measurements
DESCRIPTION:Research Progress Meeting \nDate: February 15\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: William Coulton (Cambridge) \nTitle: Novel cosmological tests with precision CMB measurements \nAbstract: High resolution cosmic microwave background (CMB) experiments provide views of the Universe both at redshift ~1100\, when the primary CMB was produced\, as well as an integrated view of the Universe between then and now\, through CMB secondary anisotropies. In this talk\, I will show that CMB secondary anisotropies contain a wealth of cosmological information and are becoming leading cosmological probes. I will present recent measurements from the Atacama Cosmology Telescope collaboration that have mapped out several of these effects. I will then highlight some challenges for these measurements with upcoming CMB experiments\, and some unique opportunities\, such as tests of the fundamental properties of our Universe. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-william-coulton-cambridge-title-novel-cosmological-tests-with-precision-cmb-measurements/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240220T160000
DTEND;TZID=UTC:20240220T170000
DTSTAMP:20260414T185207
CREATED:20240216T153252Z
LAST-MODIFIED:20240216T153252Z
UID:2502-1708444800-1708448400@rpm.physics.lbl.gov
SUMMARY:Speaker: Clara Verges (Harvard) - Title: A new era for cosmology with current and next-generation CMB experiments
DESCRIPTION:Research Progress Meeting \nDate: February 20\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Clara Verges (Harvard) \nTitle: A new era for cosmology with current and next-generation CMB experiments \nAbstract: \nCosmology has experienced a considerable surge in the past thirty years\, and is now well established as a precision science. While the standard cosmological model provides an effective description of the observed Universe\, many fundamental questions remain unresolved. From shedding light on the very first fractions of seconds after the Big Bang to looking for exotic physics\, the Cosmic Microwave Background continues to be a unique probe for fundamental physics. The next generation of CMB polarisation observatories\, embodied by CMB-Stage 4 for ground observations\, will explore this window into the Universe in an unprecedented way\, enabling breakthrough science. I will review how current experiments such as the BICEP/Keck telescopes pave the way for this next stage\, by developing efficient technologies and observing strategies\, and by sharpening constraints on theoretical models. I will then discuss the scientific and technological challenges that the CMB community must meet to ensure the success of future experiments. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-clara-verges-harvard-title-a-new-era-for-cosmology-with-current-and-next-generation-cmb-experiments/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240222T160000
DTEND;TZID=UTC:20240222T170000
DTSTAMP:20260414T185207
CREATED:20240215T205825Z
LAST-MODIFIED:20240215T205825Z
UID:2498-1708617600-1708621200@rpm.physics.lbl.gov
SUMMARY:Speaker: Zhen Liu (University of Minnesota) - Title: The Next Leap: Physics Landscape of Future Colliders
DESCRIPTION:Research Progress Meeting \nDate: February 22\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Zhen Liu (University of Minnesota) \nTitle: The Next Leap: Physics Landscape of Future Colliders \nAbstract: The future direction of High Energy Physics (HEP) is a critical topic\, especially considering the large scale and extensive preparation required for upcoming projects. We are at a point filled with opportunities for HEP\, featuring a variety of promising paths that highlight its potential for major discoveries. As the introductory talk in our series on future colliders\, this presentation aims to examine the potential of these future projects in a clear and comparative manner. I will overview the current landscape and the expected progress in high-energy physics experiments\, spotlighting recent initiatives that have resulted in significant achievements in particle physics. The goal of this talk is to outline the broad possibilities that lie ahead for HEP\, stressing the importance of innovative approaches necessary to advance this exciting area of science. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-zhen-liu-university-of-minnesota-title-the-next-leap-physics-landscape-of-future-colliders/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240227T160000
DTEND;TZID=UTC:20240227T170000
DTSTAMP:20260414T185207
CREATED:20240220T212846Z
LAST-MODIFIED:20240220T212846Z
UID:2508-1709049600-1709053200@rpm.physics.lbl.gov
SUMMARY:Speaker: Brendan Crill (Jet Propulsion Laboratory) - Title: Sensitivity limits to cosmological constraints on early Universe physics: lessons from Planck for future measurements
DESCRIPTION:Research Progress Meeting \nDate: February 27\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Brendan Crill (Jet Propulsion Laboratory) \nTitle: Sensitivity limits to cosmological constraints on early Universe physics: lessons from Planck for future measurements \nAbstract: \nThe past several decades have seen enormous breakthroughs in the understanding of fundamental physics of the Universe through observations of the cosmic microwave background (CMB) and large scale structure.  A synergy of rapid advances in technology\, data analysis capabilities\, and theory has led to an abundance of measurements\, which in turn has seen the success of the Lambda-CDM model seeded by early-Universe inflation.  This theory explains observations very few free parameters has emerged at explaining the observed structure of the universe. \nFurther refinements to this model and further characterization of observables in the CMB are a high priority for a deeper understanding of the nature of the physics of inflation and the evolution of structure across cosmic time.  This will come about through measurements of non-Gaussianity\, lensing\, and the imprint of tensor modes in large-scale CMB polarization among other observables. \nTo achieve these refinements\, projects have focused on improvements in raw sensitivity via new and more powerful detectors arrays with vastly more elements. \nHowever\, the success of earlier measurements has only come about through understanding and correction of systematic errors\, understanding astrophysical foregrounds: more powerful instruments with better sensitivity are likely to uncover new challenges. \nHere I describe lessons learned from the Planck mission at handling unforeseen instrumental and observational challenges and discuss prospects for fulfilling the sensitivity promise offered by large-scale structure projects such as SPHEREx and future CMB measurements. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-brendan-crill-jet-propulsion-laboratory-title-sensitivity-limits-to-cosmological-constraints-on-early-universe-physics-lessons-from-planck-for-future-measurements/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240229T160000
DTEND;TZID=UTC:20240229T170000
DTSTAMP:20260414T185207
CREATED:20240226T171908Z
LAST-MODIFIED:20240226T172206Z
UID:2513-1709222400-1709226000@rpm.physics.lbl.gov
SUMMARY:Speaker: Petra Merkel (Fermilab) - Title: Detectors for Future Colliders
DESCRIPTION:Research Progress Meeting \nDate: February 29\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Petra Merkel (Fermilab) \nTitle: Detectors for Future Colliders \nAbstract: I will present detector capabilities that need to be developed in order to address physics requirements at future collider experiments. In addition to laying out common detector technologies that will be useful at various collider experiments\, I will also summarize differences and special requirements at the different collider options. Furthermore\, I will give a brief overview of the state of the art of the R&D in some of the most crucial areas where technology development is needed in detector instrumentation. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-petra-merkel-fnal-title-detectors-for-future-colliders/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240305T160000
DTEND;TZID=UTC:20240305T170000
DTSTAMP:20260414T185207
CREATED:20240216T154101Z
LAST-MODIFIED:20240216T154101Z
UID:2505-1709654400-1709658000@rpm.physics.lbl.gov
SUMMARY:Speaker: Roy Aleksan (CEA-Saclay) - Title: Status of the Future Circular Collider (FCC)
DESCRIPTION:Research Progress Meeting \nDate: March 5\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Roy Aleksan (CEA-Saclay) \nTitle: Status of the Future Circular Collider (FCC) \nAbstract: \nWhile the LHC is continuing its outstanding program\, one needs to decide what the next large accelerator project in particle physics will be. There is a general global consensus that an e+e- collider is the next priority. In accordance with the 2020 European Strategy Update\, the technical and financial feasibility of a circular high energy hadron collider at CERN with a centre-of-mass energy of at least 100 TeV and with an electron-positron Higgs and electroweak factory as a possible first stage has been launched in Europe. In the present talk\, we shall discuss the status of this endeavor including the physics motivation\, the corresponding technical implications for the detectors as well as the status of the study of the accelerator complex with special emphasis on the e+e- collider. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-roy-aleksan-cea-saclay-title-status-of-the-future-circular-collider-fcc/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240307T160000
DTEND;TZID=UTC:20240307T170000
DTSTAMP:20260414T185207
CREATED:20240304T160943Z
LAST-MODIFIED:20240304T160943Z
UID:2518-1709827200-1709830800@rpm.physics.lbl.gov
SUMMARY:Speaker: Cameron Geddes (LBL Accelerator Division) - Title: Accelerators for Future Colliders
DESCRIPTION:Research Progress Meeting \nDate: March 7\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Cameron Geddes (LBL Accelerator Division) \nTitle: Accelerators for Future Colliders \nAbstract: Particle physics motivates next generations of colliders ranging from a fraction of a TeV for precision Higgs physics to the 10 TeV parton Center of Mass (pCM) scale for both broad new physics and deep characterization of the Higgs sector. Designs for Higgs factory colliders are being formalized with the aim of a project late in the decade. The 10 TeV pCm range will place radical new demands on accelerator capability\, efficiency\, and cost. At the same time\, accelerator science is advancing rapidly with a set of new technologies under development that make it feasible to address this frontier. These technologies\, including high field magnets for proton machines\, muon colliders incorporating cooling\, and high gradient linear wakefield lepton colliders all require development in order to allow us to make a confident\, informed decision on the path forward. These colliders\, a combination of general and targeted R&D\, and interactions with the detector and particle physics community to develop them will be discussed. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-cameron-geddes-lbl-accelerator-division-title-accelerators-for-future-colliders/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240312T160000
DTEND;TZID=UTC:20240312T170000
DTSTAMP:20260414T185207
CREATED:20240307T183823Z
LAST-MODIFIED:20240307T183823Z
UID:2527-1710259200-1710262800@rpm.physics.lbl.gov
SUMMARY:Speaker: Colin Hill (Columbia) - Title: Uncovering Physics Beyond the Standard Model in the Cosmic Microwave Background
DESCRIPTION:Research Progress Meeting \nDate: March 12\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Colin Hill (Columbia) \nTitle: Uncovering Physics Beyond the Standard Model in the Cosmic Microwave Background \nAbstract: \nThe cosmic microwave background (CMB) anisotropy remains the cleanest\, most powerful probe of fundamental physics in the cosmos. Measurements of the small-scale CMB temperature and polarization fields are set to undergo transformative improvements in the coming decade\, culminating in the CMB-S4 experiment\, which will open new windows into physics beyond the standard models (BSM) of particle physics and cosmology. I will first discuss my ongoing work in the Atacama Cosmology Telescope collaboration focused on cosmological parameter constraints from high-resolution CMB power spectra\, with a particular emphasis on constraining BSM physics operating just prior to recombination\, including new relativistic particles and new pseudo-scalar fields. I will describe high-precision end-to-end tests of our entire analysis pipeline on realistic\, non-Gaussian sky simulations containing all relevant Galactic and extragalactic foregrounds\, tightly coupled to a detailed instrument model. I will then turn to novel searches for BSM physics in CMB secondary anisotropies\, as could be imprinted by the screening of CMB photons by massive dark photons or axion-like particles. I will show the first results of searches for these signals in CMB data\, enabled by my group’s state-of-the-art needlet internal linear combination code. Finally\, I will discuss new analysis methodologies for more optimally cleaning non-Gaussian foregrounds in CMB maps\, with applications to both primordial B-mode searches and small-scale secondary anisotropy measurements. I will conclude with a look ahead to the prospects for BSM physics from the Simons Observatory and CMB-S4. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-colin-hill-columbia-title-uncovering-physics-beyond-the-standard-model-in-the-cosmic-microwave-background/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240314T160000
DTEND;TZID=UTC:20240314T170000
DTSTAMP:20260414T185207
CREATED:20240308T173717Z
LAST-MODIFIED:20240308T174059Z
UID:2535-1710432000-1710435600@rpm.physics.lbl.gov
SUMMARY:Speaker: Matthias Hohenberger (LLNL) - Title: Demonstrating fusion ignition in the laboratory for the first time
DESCRIPTION:Research Progress Meeting \nDate: March 14\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Matthias Hohenberger (LLNL) \nTitle: Demonstrating fusion ignition in the laboratory for the first time \nAbstract: At approximately 1 am on December 5th\, 2022\, a fusion experiment at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory achieved\, for the first time\, a target gain exceeding 1. By imploding a small capsule containing deuterium-tritium fuel with 2.05 MJ of laser light\, the resulting fusion reactions released a total energy of 3.15 MJ of nuclear fusion yield\, thus exceeding the initial input energy. This was the first time for a laboratory experiment to meet the 1997 definition by the National Academy of Sciences of fusion ignition\, an accomplishment six decades in the making. It is the result of focused work by a multi-lab team and required significant advances in high-energy-density physics\, as well as laser\, target\, and diagnostics capabilities. This talk will discuss this momentous result\, the steps that went into achieving it\, and the implications of this achievement for Inertial Fusion Energy. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-matthias-hohenberger-llnl-title-demonstrating-fusion-ignition-in-the-laboratory-for-the-first-time/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240319T160000
DTEND;TZID=UTC:20240319T170000
DTSTAMP:20260414T185207
CREATED:20240307T181501Z
LAST-MODIFIED:20240307T181501Z
UID:2525-1710864000-1710867600@rpm.physics.lbl.gov
SUMMARY:Speaker: Christian Reichardt (Melbourne) - Title: Observing the oldest light in the Universe from the South Pole: Gravitational waves\, Neutrinos and more!
DESCRIPTION:Research Progress Meeting \nDate: March 19\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Christian Reichardt (Melbourne) \nTitle: Observing the oldest light in the Universe from the South Pole: Gravitational waves\, Neutrinos and more! \nAbstract: \nThe cosmic microwave background (CMB) radiation is the oldest light we can see. Since it bears the imprint of the universe just after the Big Bang (at a mere 0.003% of the universe’s age today)\, observations of the CMB are a crucial tool in our quest to understand how the Universe began and what its future holds. The South Pole is one of the best sites on Earth for these observations\, and is the home of the South Pole Telescope (as well as CMB-S4 in the future). In this talk\, I will present the latest CMB power spectra measurements from the SPT-3G instrument on the South Pole Telescope\, and the resulting constraints on cosmology. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-christian-reichardt-melbourne-title-observing-the-oldest-light-in-the-universe-from-the-south-pole-gravitational-waves-neutrinos-and-more/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240321T160000
DTEND;TZID=UTC:20240321T170000
DTSTAMP:20260414T185207
CREATED:20240307T184742Z
LAST-MODIFIED:20240307T184742Z
UID:2532-1711036800-1711040400@rpm.physics.lbl.gov
SUMMARY:Speaker: Tom Shutt (SLAC) - Title: GammaTPC: A novel next generation Compton telescope
DESCRIPTION:Research Progress Meeting \nDate: March 21\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Tom Shutt (SLAC) \nTitle: GammaTPC: A novel next generation Compton telescope \nAbstract: I will talk about GammaTPC\, a new instrument concept for measuring astrophysical gamma rays in the MeV energy range. This part of the sky is a largely unexplored mostly due to the difficulty of measuring MeV photons\, but the potential payoff is large\, particularly in the upcoming era of multi-messenger transient astrophysics. GammaTPC attacks this difficulty using liquid argon time projection chamber (TPC) technology\, which appears to have important advantages over several other techniques that are being pursued. A core part GammaTPC is GAMPix\, a new charge readout scheme that enables fine grained readout over large area at very low power\, and has other potential applications including neutrino physics. There are a few other amusing challenges to fielding a liquid noble TPC in low Earth orbit. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-tom-shutt-slac-title-gammatpc-a-novel-next-generation-compton-telescope/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240326T160000
DTEND;TZID=UTC:20240326T170000
DTSTAMP:20260414T185207
CREATED:20240318T211830Z
LAST-MODIFIED:20240321T192913Z
UID:2554-1711468800-1711472400@rpm.physics.lbl.gov
SUMMARY:Speaker: Raphael Flauger (UC San Diego) - Title: Deciphering the Beginning
DESCRIPTION:Research Progress Meeting \nDate: March 26\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Raphael Flauger (UC San Diego) \nTitle: Deciphering the Beginning \nAbstract: \nThe cosmic microwave background (CMB) contains a wealth of information about cosmology as well as high-energy physics. It tells us about the composition and geometry of the universe\, the properties of neutrinos\, dark matter\, and even the conditions in our universe long before the cosmic microwave background was emitted. After a brief introduction\, I will discuss what we may hope to learn about the very early universe from upcoming CMB experiments that search for the imprint of primordial gravitational waves. One of the key challenges of this endeavor is the polarized emission from our galaxy. I will discuss our recent efforts to model and better understand the emission with the help of MHD simulations. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-raphael-flaugher-uc-san-diego-title-deciphering-the-beginning/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240328T160000
DTEND;TZID=UTC:20240328T170000
DTSTAMP:20260414T185207
CREATED:20240318T211226Z
LAST-MODIFIED:20240318T211226Z
UID:2551-1711641600-1711645200@rpm.physics.lbl.gov
SUMMARY:Speaker: Chiara Salemi (SLAC) - Title: ­­Seeing the invisible: the search for axion dark matter
DESCRIPTION:Research Progress Meeting \nDate: March 28\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Chiara Salemi (SLAC) \nTitle: Seeing the invisible: the search for axion dark matter \nAbstract: The presence of dark matter provides some of the most persuasive evidence for the existence of physics beyond the Standard Model. One compelling dark matter candidate is the axion\, a light boson that was originally postulated as a solution to another outstanding issue\, the strong CP problem in QCD. This talk covers two experimental programs to search for axion dark matter with advanced quantum sensors: DMRadio and BREAD. DMRadio searches for low-mass (long-wavelength) axions using a lumped-element detection method\, while BREAD searches for relatively high-mass (short-wavelength) axions using a reflector. I will discuss the status and upcoming plans for these two programs\, with a focus on the quantum sensors that enable these kinds of searches. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-chiara-salemi-slac-title-seeing-the-invisible-the-search-for-axion-dark-matter/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240402T160000
DTEND;TZID=UTC:20240402T170000
DTSTAMP:20260414T185207
CREATED:20240329T224150Z
LAST-MODIFIED:20240329T224337Z
UID:2568-1712073600-1712077200@rpm.physics.lbl.gov
SUMMARY:Speaker: Boryana Hadzhiyska (UC Berkeley) - Title: Solving big-scale problems with small-scale models in the era of CMB-S4
DESCRIPTION:Research Progress Meeting \nDate: April 2\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Boryana Hadzhiyska (UC Berkeley) \nTitle: Solving big-scale problems with small-scale models in the era of CMB-S4 \nAbstract: In this talk\, I will focus on some of the new opportunities and new challenges that CMB-S4\, the next-generation cosmic microwave background (CMB) experiment\, presents\, and I will offer a viable path forward to meeting and exceeding the goals we have set up for it. The CMB has played a huge role in shaping our understanding of the history\, evolution and contents of our Universe. From our observations of the CMB\, we have attained a good grasp of about 13.8 billion years of cosmic history\, but our direct and indirect observations are limited to a much smaller range in energy scale\, which leaves unresolved some of the biggest puzzles such as the mechanism that seeded the primordial fluctuations and the nature of the dark sector. I will discuss how we can leverage observations of the CMB to learn about these much earlier periods of cosmic history and also\, how the CMB provides complementary probes of the lower-redshift universe. On large scales\, the B-mode polarization signal can reveal the origin of primordial fluctuations\, whereas the small-scale signal holds information about the presence of non-standard light relics and the sum of the neutrino masses. However\, measuring the primordial signal is a non-trivial task\, as on its way to us\, the signal has picked up contributions from lensing and astrophysical sources\, known as foregrounds. The best way to design accurate approaches for mitigating these foregrounds is via realistic all-sky simulations. I will present new techniques for painting foregrounds onto large-volume simulations\, using physically motivated models that close the loop between simulations and observations. In addition\, I will discuss ways of optimizing the CMB lensing reconstruction techniques\, which is crucial for improving our constraints on primordial quantities such as the number of light relics and the tensor-to-scalar ratio as well as the sum of neutrino masses. Finally\, I will argue that synergies between CMB secondaries and large-scale structure surveys can place tight constraints on cosmology and astrophysics. The measurement precision of CMB-S4 will be unmatched\, but in order to make the most out of it\, we need a big step-up in our analysis and theory tools\, including the development of realistic all-sky simulations as well as techniques for optimal extraction of the small-scale cosmological signal. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-boryana-hadzhiyska-uc-berkeley-title-solving-big-scale-problems-with-small-scale-models-in-the-era-of-cmb-s4/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240404T160000
DTEND;TZID=UTC:20240404T170000
DTSTAMP:20260414T185207
CREATED:20240329T225035Z
LAST-MODIFIED:20240402T163945Z
UID:2573-1712246400-1712250000@rpm.physics.lbl.gov
SUMMARY:Speaker: Joshua Combes (JILA) - Title: Game of Qubits: winter is coming
DESCRIPTION:Research Progress Meeting \nDate: April 4\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Joshua Combes (JILA) \nTitle: Game of Qubits: winter is coming \nAbstract: The ‘Quantum Winter’ is a term that paints a scenario where the progress in quantum computing might significantly slow down\, accompanied by a decrease in both public and private investment\, and mounting skepticism regarding the field’s potential and future accomplishments. This concept echoes the historical ‘AI Winters\,’ periods of contraction in artificial intelligence research. In this presentation\, I will first evaluate our current milestones in quantum hardware development\, setting the stage for an understanding of why there’s a growing concern about an impending Quantum Winter. Following this\, I’ll share my forecasts\, pinpointing specific years when we might anticipate this cooldown to manifest. To conclude\, I’ll turn the lens inward\, contemplating proactive strategies and responses we\, as a research community\, should consider to navigate and possibly mitigate the impact of this predicted quantum chill. This talk aims not only to forecast but to fortify our resolve in advancing quantum computing through potential adversities. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-joshua-combes-jila-title-tba/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240409T160000
DTEND;TZID=UTC:20240409T170000
DTSTAMP:20260414T185207
CREATED:20240405T170743Z
LAST-MODIFIED:20240405T170743Z
UID:2582-1712678400-1712682000@rpm.physics.lbl.gov
SUMMARY:Speaker: Michel Piat (APC-IN2P3) - Title: The Q&U Bolometric Interferometer for Cosmology (QUBIC): status and perspectives
DESCRIPTION:Research Progress Meeting \nDate: April 9\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Michel Piat (APC-IN2P3) \nTitle: The Q&U Bolometric Interferometer for Cosmology (QUBIC): status and perspectives \nAbstract: QUBIC (Q & U Bolometric Interferometer for Cosmology) is an international ground-based experiment dedicated in the measurement of the polarized fluctuations of the millimeter sky and especially the Cosmic Microwave Background (CMB). It is based on bolometric interferometry\, an original detection technique which combine the immunity to systematic effects of an interferometer with the sensitivity of low temperature incoherent detectors. QUBIC is currently in commissioning in Argentina\, at the Alto Chorrillos mountain site at 5000m a.s.l. near San Antonio de los Cobres\, in the Salta province. After a description of the QUBIC instrument\, I will present the last results of the first characterization phases with a focus on the detectors and readout system based on NbSi Transition Edge Sensors (TESs) cooled to 320mK. The perspective of spectro-imaging will also be described allowing for better foreground mitigation. This feature will soon be tested with QUBIC and could represent a significant breakthrough in CMB polarimetry. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-michel-piat-apc-in2p3-title-the-qu-bolometric-interferometer-for-cosmology-qubic-status-and-perspectives/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20240411T160000
DTEND;TZID=UTC:20240411T170000
DTSTAMP:20260414T185207
CREATED:20240312T155021Z
LAST-MODIFIED:20240312T155447Z
UID:2539-1712851200-1712854800@rpm.physics.lbl.gov
SUMMARY:Speaker: Slavomira Stefkova (Karlsruhe Institute of Technology) - Title: Glimpse of a Rare B Decay with Two Invisible Neutrinos at Belle II
DESCRIPTION:Research Progress Meeting \nDate: April 11\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Slavomira Stefkova (Karlsruhe Institute of Technology) \nTitle: Glimpse of a Rare B Decay with Two Invisible Neutrinos at Belle II \nAbstract: The decay of B+→K+νν̄ is mediated by flavor-changing neutral current. In the Standard Model\, the rate for this elusive process is predicted to be 6×10^-6\, while enhancements are foreseen in many New Physics models. Searching for B+→K+νν̄ decays is\, however\, experimentally challenging as this decay is not only rare but also contains two neutrinos\, leaving no signature in the detector. In this talk\, I will show you details of the newest measurement of the rate of B+→K+νν̄ decays\, which is based on 362 fb^-1 of SuperKEKB electron-positron collision data collected at the Upsilon(4S) resonance by the Belle II experiment in Tsukuba\, Japan. Using two different but complementary reconstruction techniques\, we found\, for the first time\, evidence for the B+→K+νν̄ process. At the end of my talk\, I will highlight other future opportunities in B-decays with invisible signatures. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-slavomira-stefkova-kit-title-glimpse-of-a-rare-b-decay-with-two-invisible-neutrinos-at-belle-ii/
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BEGIN:VEVENT
DTSTART;TZID=UTC:20240416T160000
DTEND;TZID=UTC:20240416T170000
DTSTAMP:20260414T185207
CREATED:20240410T203009Z
LAST-MODIFIED:20240410T203009Z
UID:2586-1713283200-1713286800@rpm.physics.lbl.gov
SUMMARY:Speaker: Julien Guy (LBNL) - Title: The Dark Energy Spectroscopic Instrument First Year Results: Cosmic Expansion History with Baryon Acoustic Oscillations
DESCRIPTION:Research Progress Meeting \nDate: April 16\, 2024 \nTime: 4:00- 5:00 pm  \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Julien Guy (LBNL) \nTitle: The Dark Energy Spectroscopic Instrument First Year Results: Cosmic Expansion History with Baryon Acoustic Oscillations \nAbstract: The Dark Energy Spectroscopic Instrument (DESI) collaboration is conducting a 5 year redshift survey of 40 million extra-galactic sources over 14\,000 square degrees of the northern sky. One of its primary goals is to measure the cosmic expansion history with baryon acoustic oscillations (BAO). I will present the measurement of BAO in galaxy\, quasar and Lyman-alpha forest tracers from the first year of observation. With 5.7 million galaxy and quasar redshifts in the range 0.1 < z < 2.1\, and 420\,000 Lyman-alpha forest quasars at higher redshift\, the aggregate precision on BAO is of 0.52% at z<2.1 and 1.1% at an effective redshift z=2.3\, surpassing in a year two decades of observations with the SDSS. I will present some of the numerous validation tests performed with simulations and blinded data. I will then highlight the main cosmological results\, with improved constraints on the dark energy equation of state\, the Hubble parameter\, spatial curvature\, and the sum of neutrino masses. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09 \nMeeting ID: 956 7989 2182 \nPasscode: 169037
URL:https://rpm.physics.lbl.gov/event/speaker-julien-guy-lbnl-title-the-dark-energy-spectroscopic-instrument-first-year-results-cosmic-expansion-history-with-baryon-acoustic-oscillations/
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BEGIN:VEVENT
DTSTART;TZID=UTC:20240425T160000
DTEND;TZID=UTC:20240425T170000
DTSTAMP:20260414T185207
CREATED:20240419T165251Z
LAST-MODIFIED:20240419T165251Z
UID:2593-1714060800-1714064400@rpm.physics.lbl.gov
SUMMARY:Speaker: Caterina Vernieri (SLAC) - Title: Delving into the Unknown: The Higgs Boson at Future Colliders
DESCRIPTION:Research Progress Meeting \nDate: April 25\, 2024 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Caterina Vernieri (SLAC) \nTitle: Delving into the Unknown: The Higgs Boson at Future Colliders \nAbstract: The Higgs boson was discovered in 2012 by the ATLAS and CMS experiments at the world’s most powerful particle collider\, the Large Hadron Collider (LHC) in Geneva\, Switzerland. This particle plays a unique role in fundamental physics. It gives all of the known elementary particles\, including itself\, their masses. While we now have a strong evidence that the Higgs field is indeed the unique source of mass for the known elementary particles\, the next step is to search for new interactions that could also explain why the Higgs field has the properties required by the Standard Model of particle physics. We have no clear roadmap to this new theory but the Higgs boson plays a crucial role in this quest. The goal of a next-generation e+e- collider is to carry out precision measurements to per-cent level of the Higgs boson properties that are not accessible at the LHC. In this talk we present the challenges and possibilities for the next e+e- collider and recent progress. The exploitation of the complementarity between LHC and future colliders will be the key to understanding fundamentally the Higgs boson. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09\n\nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-caterina-vernieri-slac-title-delving-into-the-unknown-the-higgs-boson-at-future-colliders/
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