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PRODID:-//LBNL Physics Division Research Progress Meetings - ECPv6.8.3//NONSGML v1.0//EN
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X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
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DTSTART:20250101T000000
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DTSTART;TZID=UTC:20250213T160000
DTEND;TZID=UTC:20250213T170000
DTSTAMP:20260414T151216
CREATED:20250207T185807Z
LAST-MODIFIED:20250207T185807Z
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SUMMARY:Speaker: Krishna Rajagopal (MIT) - Title: Novel Probes of the Primordial Liquid
DESCRIPTION:Research Progress Meeting \nDate: February 13\, 2025 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Krishna Rajagopal (MIT) \nTitle: Novel Probes of the Primordial Liquid \nAbstract: Heavy ion collisions reproduce droplets of the trillions-of-degrees-hot liquid that filled the microseconds-old universe\, conventionally called quark-gluon plasma (QGP) but better thought of as hot quark soup. Over the past twenty years\, data obtained via recreating this primordial fluid have shown that it is the most liquid liquid in the universe\, making it the first complex matter to form as well as the source of all protons and neutrons. After a look at what we have learned about the formation and properties of this original liquid from heavy ion collisions\, I will focus on the road ahead\, in particular on new probes being developed to answer questions like: How does a strongly coupled liquid emerge\, given that what you will see if you can probe QGP with high resolution is weakly coupled quarks and gluons? How can we use jets to see the inner workings of QGP and answer this question? And how does the droplet of QGP ripple after it has been probed by a passing jet? \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-krishna-rajagopal-mit-title-novel-probes-of-the-primordial-liquid/
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BEGIN:VEVENT
DTSTART;TZID=UTC:20250220T160000
DTEND;TZID=UTC:20250220T170000
DTSTAMP:20260414T151216
CREATED:20250219T205209Z
LAST-MODIFIED:20250219T205304Z
UID:2765-1740067200-1740070800@rpm.physics.lbl.gov
SUMMARY:Speaker: Aishik Ghosh (UCI)\, Title: Overcoming challenges of quantum interference in Higgs physics with high-dimensional statistics
DESCRIPTION:Abstract: Quantum interference between signal and background Feynman diagrams produce non-linear effects that challenge core assumptions going into the statistical analysis methodology in particle physics. I show that for such cases\, no single observable can capture all the relevant information needed to perform optimal inference of theory parameters from data collected in our experiments. The optimal data analysis strategy is to perform statistical inference directly on high-dimensional data\, without relying on summary histograms. Neural Simulation-Based Inference (NSBI) is a class of techniques that naturally handle high dimensional data\, avoiding the need to design low-dimensional summary histograms. We design a general purpose statistical framework in the ATLAS experiment that enables the application of NSBI to full-scale physics analyses\, leading to a second publication of the Higgs width measurement on Run2 data\, significantly outperforming the previous measurement punished by the experiment on the same data. \nTea and cookies will be served from 3:45 – 4:00 pm in the Sessler conference room. \nIf you’d like to meet with the speaker\, please send your request to Liz Worthy. \nJoin Zoom Meeting https://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09 \nMeeting ID: 988 5432 2464\nPasscode: 142239 \n 
URL:https://rpm.physics.lbl.gov/event/overcoming-challenges-of-quantum-interference-in-higgs-physics-with-high-dimensional-statistics/
LOCATION:50A-5132 Sessler-Join Zoom
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BEGIN:VEVENT
DTSTART;TZID=UTC:20250225T160000
DTEND;TZID=UTC:20250225T170000
DTSTAMP:20260414T151216
CREATED:20250225T155146Z
LAST-MODIFIED:20250225T155146Z
UID:2775-1740499200-1740502800@rpm.physics.lbl.gov
SUMMARY:Speaker: Atsushi J. Nishizawa (Gifu Shotoku Gakuen University) - Title: Subaru HSC medium band filter survey and photometric redshift of galaxies
DESCRIPTION:Research Progress Meeting \nDate: February 25\, 2025 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Atsushi J. Nishizawa (Gifu Shotoku Gakuen University) \nTitle: Subaru HSC medium band filter survey and photometric redshift of galaxies \nAbstract: Photometric redshift (photo-z) is a well-known technique for measuring the redshift of galaxies using imaging observations. The most challenging aspect of photo-z estimation is that the available information is quite limited\, as most imaging surveys utilize broad-band filters\, resulting in relatively low wavelength resolution. Traditionally\, photo-z is measured by fitting model galaxy spectral energy distributions (SEDs) to the observed fluxes and determining the optimal redshift for each galaxy. An alternative approach is to estimate redshifts using machine learning methods\, which can learn complex relationships between observables and redshift.\nHowever\, significant improvement in photo-z accuracy is unlikely without incorporating additional information. One possible avenue is to extend the wavelength coverage\, while another is to improve the wavelength resolution. We are currently developing medium-band filters to be installed on the Hyper-Suprime Cam at the prime focus of the Subaru Telescope. These medium-band filters will offer moderate spectral resolution and high spatial resolution\, providing a substantial amount of additional information. We are preparing to conduct a medium-band filter survey in the coming semesters. In this talk\, we will introduce several science cases in collaboration with Euclid\, the Roman Space Telescope\, DESI-II\, and the Subaru Prime Focus Spectrograph (PFS). \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-atsushi-j-nishizawa-gifu-shotoku-gakuen-university-title-subaru-hsc-medium-band-filter-survey-and-photometric-redshift-of-galaxies/
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BEGIN:VEVENT
DTSTART;TZID=UTC:20250227T160000
DTEND;TZID=UTC:20250227T170000
DTSTAMP:20260414T151216
CREATED:20250225T171208Z
LAST-MODIFIED:20250225T171208Z
UID:2781-1740672000-1740675600@rpm.physics.lbl.gov
SUMMARY:Speaker: Ryan Bouabid (Duke) - Title: COHERENT: Using Small Recoils to Look for Big Discoveries
DESCRIPTION:Research Progress Meeting \nDate: February 27\, 2025 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Ryan Bouabid (Duke) \nTitle: COHERENT: Using Small Recoils to Look for Big Discoveries \nAbstract: The COHERENT collaboration is pioneering the study of Coherent Elastic Neutrino-Nucleus Scattering (CEvNS)\, a process only recently observed. Using the Spallation Neutron Source at Oak Ridge National Laboratory\, COHERENT has deployed a suite of detectors using diverse technologies and targets. This talk will provide an overview of the collaboration’s experimental efforts and status. Beyond the initial measurements of CEvNS\, COHERENT’s results have opened new avenues of discovery potential. \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-ryan-bouabid-duke-title-coherent-using-small-recoils-to-look-for-big-discoveries/
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