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X-WR-CALNAME:LBNL Physics Division Research Progress Meetings
X-ORIGINAL-URL:https://rpm.physics.lbl.gov
X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
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BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20160313T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20161106T090000
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TZID:UTC
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TZOFFSETFROM:+0000
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TZNAME:UTC
DTSTART:20160101T000000
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20161110T160000
DTEND;TZID=America/Los_Angeles:20161110T170000
DTSTAMP:20260414T191310
CREATED:20160919T152845Z
LAST-MODIFIED:20160919T152845Z
UID:299-1478793600-1478797200@rpm.physics.lbl.gov
SUMMARY:Reserved
DESCRIPTION:
URL:https://rpm.physics.lbl.gov/event/reserved-13/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20161108T160000
DTEND;TZID=America/Los_Angeles:20161108T170000
DTSTAMP:20260414T191310
CREATED:20160919T152821Z
LAST-MODIFIED:20160919T152821Z
UID:297-1478620800-1478624400@rpm.physics.lbl.gov
SUMMARY:Reserved
DESCRIPTION:
URL:https://rpm.physics.lbl.gov/event/reserved-8/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20161103T160000
DTEND;TZID=America/Los_Angeles:20161103T170000
DTSTAMP:20260414T191310
CREATED:20160919T152800Z
LAST-MODIFIED:20160919T152800Z
UID:295-1478188800-1478192400@rpm.physics.lbl.gov
SUMMARY:Reserved
DESCRIPTION:
URL:https://rpm.physics.lbl.gov/event/reserved-4/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20161101T040000
DTEND;TZID=America/Los_Angeles:20161101T170000
DTSTAMP:20260414T191310
CREATED:20160919T152721Z
LAST-MODIFIED:20160919T152721Z
UID:293-1477972800-1478019600@rpm.physics.lbl.gov
SUMMARY:Reserved
DESCRIPTION:
URL:https://rpm.physics.lbl.gov/event/reserved/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20161027T160000
DTEND;TZID=America/Los_Angeles:20161027T170000
DTSTAMP:20260414T191310
CREATED:20161006T143347Z
LAST-MODIFIED:20161006T143347Z
UID:363-1477584000-1477587600@rpm.physics.lbl.gov
SUMMARY:Bruce Schumm (UCSC) "Supersymmetry Searches at the LHC: Status and a Thought or Two about the Future"
DESCRIPTION:Abstract:\n\nI’ll remind us all of the motivation for Supersymmetry searches at the LHC\, and provide a general overview of the status of the search. Since\, even after results making use of in excess of 10 fb-1 of 13 TeV data we see no significant signals\, I’ll end with a discussion of how imperiled SUSY may or may not be at this point.
URL:https://rpm.physics.lbl.gov/event/bruce-schumm-ucsc-status-of-supersymmetry-searches-at-the-lhc/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20161020T160000
DTEND;TZID=America/Los_Angeles:20161020T170000
DTSTAMP:20260414T191310
CREATED:20161006T143006Z
LAST-MODIFIED:20161006T143006Z
UID:359-1476979200-1476982800@rpm.physics.lbl.gov
SUMMARY:Marilena Loverde (Stony Brook Univ.) "Neutrinos\, Quintessence and Structure Formation in the Universe"
DESCRIPTION:Abstract:\nThe large-scale structure of our universe (the distribution of galaxies on very large-scales for instance) contains a wealth of information about the origin\, evolution\, and matter content of the universe. Extracting this information relies crucially on understanding how galaxies and other biased objects trace the large-scale matter distribution. In a universe such as our own\, with both cold dark matter and massive neutrinos\, or in alternative cosmologies with clustered quintessence\, this problem is much more complicated. I will discuss new tools that my group has developed to study gravitational evolution in cosmologies with multiple fluids\, the novel signatures we have identified including a new probe of neutrino mass\, and the broader implications for models of large-scale structure.
URL:https://rpm.physics.lbl.gov/event/marilena-loverde-stony-brook-univ-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20161018T160000
DTEND;TZID=America/Los_Angeles:20161018T170000
DTSTAMP:20260414T191310
CREATED:20161006T152245Z
LAST-MODIFIED:20161006T152245Z
UID:365-1476806400-1476810000@rpm.physics.lbl.gov
SUMMARY:Greg Aldering\, Bob Cahn\, Alex Kim\, and Saul Perlmutter (LBNL) "Type Ia Supernova Program at LBNL: Status and Plans"
DESCRIPTION:ABSTRACT:\nSupernovae remain a central part of dark energy science\, complementing the programs with BAO and weak lensing.  The LBNL group is active with the nearby supernova search with the SN factory\, a role in the intermediate-redshift DES supernova program\, and the collection of increasing numbers of high-z Type Ia supernovae.  The SuperNova factory has revealed a number of systematic issues and some means to address them.  While LSST will discover hundreds of thousands of supernovae\, only if the systematic issues can be addressed will a Stage-IV experiment be possible.  Combining WFIRST and LSST with what is being learned at the SN factory and at DES can provide the path to Stage-IV.
URL:https://rpm.physics.lbl.gov/event/robert-cahn-lbnl-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20161013T160000
DTEND;TZID=America/Los_Angeles:20161013T170000
DTSTAMP:20260414T191310
CREATED:20161006T143256Z
LAST-MODIFIED:20161006T143256Z
UID:361-1476374400-1476378000@rpm.physics.lbl.gov
SUMMARY:Hans Walter Rix (Max Planck) "Fuel Exploration in the Early Universe: The ALMA Spectroscopic Survey of the Hubble Ultra Deep Field"
DESCRIPTION:Abstract:\nMuch of the exploration of the high-redshift\nUniverse has focussed on first finding sites of ongoing star formation.\nThis can then lead to pointed follow-up of how much\ncold (molecular) gas there is that feeds this star formation.\nALMA now enables ‘blind’ surveys for molecular gas\, the fuel\nsupply for galaxy formation at early epochs.\nI will report on initial results of what such surveys can yield.
URL:https://rpm.physics.lbl.gov/event/hans-walter-rix-max-planck-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160915T160000
DTEND;TZID=America/Los_Angeles:20160915T170000
DTSTAMP:20260414T191310
CREATED:20160912T084446Z
LAST-MODIFIED:20160912T084446Z
UID:290-1473955200-1473958800@rpm.physics.lbl.gov
SUMMARY:Nick Kaiser (Hawaii) "The Physics of Gravitational Redshifts in Clusters of Galaxies"
DESCRIPTION:ABSTRACT:\nWojtak\, Hansen and Hjorth and others have measured the long-predicted gravitational redshift of light escaping from galaxy clusters using Sloan Digital Sky Survey data. The effect is very small\, corresponding to a velocity shift of only ~10 km/s in clusters with internal random motions of order 600 km/s\, but the result appears to be robust and is in good agreement with general relativity predictions and possibly in conflict with some alternative theories. It was soon realised that the interpretation of this measurement is more complex than initially thought as one needs to allow for the transverse Doppler (TD) redshift. In this talk I will describe how there are actually two more rather subtle and unexpected physical effects that need to be considered in interpreting these observations; there is a `light cone’ effect that augments the TD shift\, and there is a competing effect that reverses the sign of the transverse Doppler effect so that we actually observe a transverse Doppler blue-shift. I will discuss how these observations constrain gravitation theory\, and along the way discuss some issues concerning the interpretation of astronomical redshifts in a broader context.
URL:https://rpm.physics.lbl.gov/event/nick-kaiser-hawaii-the-physics-of-gravitational-redshifts-in-clusters-of-galaxies/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160908T160000
DTEND;TZID=America/Los_Angeles:20160908T170000
DTSTAMP:20260414T191310
CREATED:20160811T095806Z
LAST-MODIFIED:20160811T095806Z
UID:284-1473350400-1473354000@rpm.physics.lbl.gov
SUMMARY:Brian Fujikawa (LBNL) "New Neutrinoless Double Beta Decay Results from KamLAND-Zen"
DESCRIPTION:Abstract:\nKamLAND is a one-kiloton liquid scintillator-based neutrino detector and is one of the recipients of the 2016 Breakthrough Prize in Fundamental Physics for its 2002 investigation of neutrino oscillations. KamLAND-Zen is the current phase of KamLAND\, and it is an experiment to search for the neutrinoless double beta decay of Xe-136. In this talk\, I will describe the KamLAND experiment and present the new results from KamLAND-Zen. I will conclude by describing the plans and future objectives of KamLAND and KamLAND-Zen.
URL:https://rpm.physics.lbl.gov/event/brian-fujikawa-lbnl-new-neutrinoless-double-beta-decay-results-from-kamland-zen/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160825T160000
DTEND;TZID=America/Los_Angeles:20160825T170000
DTSTAMP:20260414T191310
CREATED:20160725T150354Z
LAST-MODIFIED:20160725T150354Z
UID:278-1472140800-1472144400@rpm.physics.lbl.gov
SUMMARY:Neil Spooner (Univ. of Sheffield) " Galactic Signatures and Directional Detection of Particle Dark Matter - the CYGNUS Project and Probing below the Neutrino Floor”
DESCRIPTION:Abstract:\nI’ll briefly review the arguments for and status of particle dark matter searches and then focus on the possibility of looking for a definitive galactic signature.  There have been several hints for WIMP dark matter over the years\, most notably the DAM/LIBRE annual modulation result.  There are new efforts to study this\, for instance DM-ICE.  I’ll describe the efforts and latest results then focus on prospects for a directional signal using gas Time Projection Chamber technology including the new CYGNUS global collaboration aiming to deploy targets at multiple latitudes deep underground.
URL:https://rpm.physics.lbl.gov/event/neil-spooner-univ-of-sheffield-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160818T160000
DTEND;TZID=America/Los_Angeles:20160818T170000
DTSTAMP:20260414T191310
CREATED:20160613T084534Z
LAST-MODIFIED:20160613T084534Z
UID:273-1471536000-1471539600@rpm.physics.lbl.gov
SUMMARY:Simone Pagan Griso (LBNL) "Highlights from ICHEP on the LHC Results"
DESCRIPTION:Abstract:\n\nThe 38th International Conference on High Energy Physics has\njust concluded in Chicago\, US. New results from various areas of\nhigh-energy particle physics\, as well as neutrino physics\, cosmology\nand theory were presented in front of about 1400 attendees. In\nparticular\, new results from the LHC experiments were highly\nanticipated\, using more than 10/fb of proton-proton collision data\ncollected at a center-of-mass energy of 13 TeV. I will review a\nselection of the results presented\, focusing on the LHC experiments.
URL:https://rpm.physics.lbl.gov/event/brian-fugikawa-lbnl-new-neutrinoless-double-beta-decay-results-from-kamland-zen/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160811T160000
DTEND;TZID=America/Los_Angeles:20160811T170000
DTSTAMP:20260414T191310
CREATED:20160512T100121Z
LAST-MODIFIED:20160512T100121Z
UID:255-1470931200-1470934800@rpm.physics.lbl.gov
SUMMARY:Leslie Rosenberg (Univ. of Washington) "The Axion Dark-Matter Experiment (ADMX)"
DESCRIPTION:ABSTRACT:\nThe axion is a hypothetical elementary particle whose existence would explain the\nbaffling absence of CP violation in the strong interactions. Axions also happen to be a\ncompelling dark-matter candidate. Axions could comprise the\noverwhelming majority of mass in the universe\, yet they would be extraordinarily difficult\nto detect. However\, several experiments\, either under construction or in operation\,\nwould be sensitive to even the more pessimistically coupled dark-matter axions. The\nAxion Dark-Matter Experiment (ADMX) is perhaps the most powerful of these experiments.\nADMX is in the DOE/NSF Generation-2 portfolio of large dark-matter experiments and is\njust transitioning into data-taking. This talk reviews the capabilities and the status of ADMX.
URL:https://rpm.physics.lbl.gov/event/leslie-rosenberg-univ-of-washington-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160802T160000
DTEND;TZID=America/Los_Angeles:20160802T170000
DTSTAMP:20260414T191310
CREATED:20160725T141937Z
LAST-MODIFIED:20160725T141937Z
UID:277-1470153600-1470157200@rpm.physics.lbl.gov
SUMMARY:Evan Pease (UCB/Yale) "New results from the 332-live-day exposure of the LUX dark matter experiment"
DESCRIPTION:Abstract:\nEarlier this year the Large Underground Xenon (LUX) experiment completed its final dark matter search from 4850 feet below ground in the Sanford Underground Research Facility in Lead\, South Dakota. Between September 2014 and May 2016 the LUX detector amassed 332 live days of exposure in its hunt for dark matter\, primarily in search of Weakly Interacting Massive Particles (WIMPs)\, a favored dark matter candidate. Our analysis of this exposure yields improved and world-leading constraints on the interaction of WIMPs for a wide range of possible masses\, placing a 90%-confidence exclusion limit on spin-independent WIMP-nucleon cross-section greater than 2.2 x 10^-46 cm^2 at 50 GeV/c^2 WIMP mass. This result includes a factor of 4 improvement over the previous LUX sensitivity to WIMP masses 100 GeV/c^2 and above. This presentation will include a discussion of changes in detector performance from the previous LUX search in 2013\, a description of the “salted” data analysis approach\, and a look at the frequent in-situ calibrations of the complex time-varying detector response during 20 months of operation.
URL:https://rpm.physics.lbl.gov/event/evan-pease-ucbyale-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160728T160000
DTEND;TZID=America/Los_Angeles:20160728T170000
DTSTAMP:20260414T191310
CREATED:20160523T084723Z
LAST-MODIFIED:20160523T084723Z
UID:257-1469721600-1469725200@rpm.physics.lbl.gov
SUMMARY:Francois Bouchett (IAP) "Latest Cosmological News from the Planck Satellite Project"
DESCRIPTION:Abstract:\nSketched out in 1992\, selected by ESA in 1996\, and launched in 2009\, the Planck satellite was shut off in 2013\, after a measuring mission that exceeded all expectations. The Planck collaboration delivered a first set of cosmological data and results in March 21st 2013\, and the full set in February 2015. Part of the data delivery is a “definitive” map of the anisotropies of the Cosmic Microwave Background (CMB)\, its angular power spectrum together with their full statistical characterization. The 2015 delivery further include pioneering polarisation data. I’ll briefly recall salient scientific results we derived from these data. The Planck collaboration is now working towards a “legacy release” by the end of 2016 which will mark the end of the formal collaboration we set up back in the previous century. To this end\, we keep improving further our control on the potential level of residual systematics in the data and in accounting for these uncertainties in the final cosmological results to further enhance the robustness and precision of the constraints posed by Planck. For instance\, we announced in May an improved likelihood analysis using detailed end-to-end simulation as well as an improved constraint on the reionization optical depth by using for the first time the E-mode polarisation data from the HFI instrument. This determination fully reconciles the CMB results with other astrophysical measurements of reionization from sources at high redshift. It also gives constraints on the level of reionization at redshifts beyond that of the most distant sources (z > 10). I will further give some perspectives on what is coming next.
URL:https://rpm.physics.lbl.gov/event/francois-bouchett-tba-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160721T160000
DTEND;TZID=America/Los_Angeles:20160721T170000
DTSTAMP:20260414T191310
CREATED:20160524T092711Z
LAST-MODIFIED:20160524T092711Z
UID:258-1469116800-1469120400@rpm.physics.lbl.gov
SUMMARY:Joint Physics and ATAP Divisions Seminar | William Barletta (USPAS/ MIT) & Martin Breidenbach (SLAC) "Accelerator Research in the U.S. for High Energy Physics:  A biased perspective"
DESCRIPTION:Abstract:\nThe U.S. could move boldly toward accelerating transformational accelerator research for high-energy physics. Profound questions remain to be answered in particle physics; recent discoveries reconfirm the value of continued investments. However\, going beyond the present generation of high energy accelerators will require changing the capability-cost curve of accelerators\, which can only happen through an aggressive\, sustained\, and imaginative R&D program aimed at building the future accelerators at a dramatically lower cost. Both of us were members of Department of Energy panel that recently studied the potential structure of such a research program. We participated fully in the process and approve the report. Nonetheless\, our experience led us to continue and extend our analysis of the issues that will drive accelerator research aimed at future accelerators for high-energy physics with the aim of informing interested physicists from all disciplines\, not just accelerator experts. Broadly\, we will look at prospects for proton-proton colliders and electron-position colliders – all interlaced with our biases and (and perhaps not politically correct) opinions.
URL:https://rpm.physics.lbl.gov/event/joint-physics-and-atap-divisions-seminar-william-barletta-uspas-mit-martin-breidenbach-slac-accelerator-research-in-the-u-s-for-high-energy-physics-a-biased-perspective/
LOCATION:50-Auditorium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160630T160000
DTEND;TZID=America/Los_Angeles:20160630T170000
DTSTAMP:20260414T191310
CREATED:20160512T093837Z
LAST-MODIFIED:20160512T093837Z
UID:254-1467302400-1467306000@rpm.physics.lbl.gov
SUMMARY:Alan Poon (LBL) "Searches for Majorana Neutrinos"
DESCRIPTION:Abstract:\nNeutrino oscillation experiments have demonstrated conclusively that neutrinos have mass.  In many Standard Model extensions neutrinos are favored to be Majorana fermions.  A worldwide experimental program to search for this Majorana nature of neutrinos is underway.  In this talk\, I will review the status of experimental searches for Majorana neutrinos\, with the focus on neutrinoless double-beta decay experiments.\nI will also give a brief summary on GERDA Phase-II results that were released on June 29.
URL:https://rpm.physics.lbl.gov/event/alan-poon-lbl-latest-status-in-neutrinoless-double-beta-decay-including-searches-marjorana-neutrinos/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160623T040000
DTEND;TZID=America/Los_Angeles:20160623T170000
DTSTAMP:20260414T191310
CREATED:20160505T085153Z
LAST-MODIFIED:20160505T085153Z
UID:253-1466654400-1466701200@rpm.physics.lbl.gov
SUMMARY:Kate Scholberg (Duke U.) "What Stubs and Sparkles Will Tell Us About Exploding Stars"
DESCRIPTION:Abstract:\nWhen a massive star collapses at the end of its life\, nearly all of\nthe gravitational binding energy of the resulting remnant is released\nin the form of neutrinos.  I will discuss the nature of the\ncore-collapse neutrino burst and what we can learn about particle\nphysics and about astrophysics from the detection of these neutrinos.\nI will cover supernova neutrino detection techniques in general\,\ncurrent supernova neutrino detectors\, and prospects for specific\nfuture experiments.
URL:https://rpm.physics.lbl.gov/event/kate-scholberg-duke-u-what-stubs-and-sparkles-will-tell-us-about-exploding-stars/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160602T160000
DTEND;TZID=America/Los_Angeles:20160602T170000
DTSTAMP:20260414T191310
CREATED:20160420T082952Z
LAST-MODIFIED:20160420T082952Z
UID:246-1464883200-1464886800@rpm.physics.lbl.gov
SUMMARY:David Stuart (UCSB) "Recent CMS SUSY Results"
DESCRIPTION:Abstract: \nThe LHC energy increase from 8 TeV to 13 TeV in 2015 provided a significant increase in sensitivity for new\, high mass particles. This had a large impact on the sensitivity of searches for supersymmetric squarks and gluinos even though the 2015 data sample is relatively small.  I will survey the results of these searches\, discuss some of the strategy of the CMS SUSY program\, and describe the methodology for three specific searches.
URL:https://rpm.physics.lbl.gov/event/david-stuart-ucsb-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160531T160000
DTEND;TZID=America/Los_Angeles:20160531T170000
DTSTAMP:20260414T191310
CREATED:20160527T145610Z
LAST-MODIFIED:20160527T145610Z
UID:268-1464710400-1464714000@rpm.physics.lbl.gov
SUMMARY:Prof. V.M. Datar (Tata Institute of Fundamental Research\, Mumbai\, India) "The India based Neutrino Observatory project"
DESCRIPTION:Abstract:\nThe Indian effort to build an underground laboratory for rare processes is outlined. The flagship experiment\, based on the 50 kiloton Iron Calorimeter\, will measure atmospheric muon neutrinos and antineutrinos\, separately\, and will target the open problem of the neutrino mass hierarchy. Together with other experiments worldwide this will help address CP violation in the neutrino sector and this may help us understand why there is a preponderance of matter over anti-matter in the universe. The other experiments that are being planned are in the areas of: (1) neutrinoless double beta decay using a cryogenic bolometer of 124Sn (2) dark matter search and (3) a low energy accelerator for measuring nuclear cross sections of astrophysical interest.
URL:https://rpm.physics.lbl.gov/event/prof-v-m-datar-the-india-based-neutrino-observatory-project/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160519T160000
DTEND;TZID=America/Los_Angeles:20160519T170000
DTSTAMP:20260414T191310
CREATED:20160422T074341Z
LAST-MODIFIED:20160422T074341Z
UID:249-1463673600-1463677200@rpm.physics.lbl.gov
SUMMARY:Kathryn Zurek (LBNL/UCB) "New Ideas in Dark Matter Direct Detection"
DESCRIPTION:Abstract:\n 
URL:https://rpm.physics.lbl.gov/event/kathryn-zurek-lbnlucb-asymmetric-dark-matter/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160512T160000
DTEND;TZID=America/Los_Angeles:20160512T170000
DTSTAMP:20260414T191310
CREATED:20160420T103124Z
LAST-MODIFIED:20160420T103124Z
UID:248-1463068800-1463072400@rpm.physics.lbl.gov
SUMMARY:Bharat Ratra (Kansas State U.) "Dark Energy: Constant or Time Variable? (...and other open questions)""
DESCRIPTION:Experiments and observations over the last two decades have persuaded cosmologists that (as yet undetected) dark energy is by far the main component of the energy budget of the universe. I review a few simple dark energy models and compare their predictions to observational data\, to derive dark energy model-parameter constraints and to test consistency of different data sets. I conclude with a list of open cosmological questions.
URL:https://rpm.physics.lbl.gov/event/bharat-ratra-kansas-state-u-dark-energy-constant-or-time-variable-and-other-open-questions/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160505T160000
DTEND;TZID=America/Los_Angeles:20160505T170000
DTSTAMP:20260414T191310
CREATED:20160420T091321Z
LAST-MODIFIED:20160420T091321Z
UID:247-1462464000-1462467600@rpm.physics.lbl.gov
SUMMARY:Giorgio Gratta (Stanford) "Probing Gravity - and Other Forces - at Extreme Scales"
DESCRIPTION:The inverse square law of gravity has been empirically tested to various degrees for distances between <0.1mm to 1AU.   Outside this range very little is known and\, yet\, physics beyond the standard model may actually introduce new long-range forces that would be observed as anomalies in the 1/R^2 behavior of gravity.   I will discuss some new experiments designed to substantially advance our knowledge in this area\, at the two extremes of the distance range.  While the long distance regime would involve a deep space mission\, a new breed of experiments focusing on the micron regime is already taking data\, not only on gravitational interactions.
URL:https://rpm.physics.lbl.gov/event/giorgio-gratta-stanford-probing-gravity-and-other-forces-at-extreme-scales/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160421T160000
DTEND;TZID=America/Los_Angeles:20160421T170000
DTSTAMP:20260414T191310
CREATED:20160405T142753Z
LAST-MODIFIED:20160405T142753Z
UID:241-1461254400-1461258000@rpm.physics.lbl.gov
SUMMARY:Chris Marshall (Univ. of Rochester) "Measurement of $K^{+}$ production by neutrinos at MINERvA"
DESCRIPTION:Abstract:\nCharged kaon production by atmospheric neutrinos is a background in searches for the proton decay $p \rightarrow K^{+} \bar{\nu}$. Measurements of neutrino-induced $K^{+}$ production are important inputs for current and future proton decay searches at Super-K\, Hyper-K and DUNE. The MINERvA neutrino-nucleus cross section experiment at Fermilab uses timing information to isolate a sample of $K^{+}$ decay-at-rest events. I will present the first differential cross section measurements for both charged- and neutral-current $K^{+}$ production by neutrinos\, and discuss how these measurements can be used to constrain background predictions for proton decay. I will also show the first experimental evidence for coherent $K^{+}$ production by neutrinos.
URL:https://rpm.physics.lbl.gov/event/chris-marshall-univ-of-rochester-measurement-of-k-production-by-neutrinos-at-minerva/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160331T160000
DTEND;TZID=America/Los_Angeles:20160331T170000
DTSTAMP:20260414T191310
CREATED:20160322T084936Z
LAST-MODIFIED:20160322T084936Z
UID:238-1459440000-1459443600@rpm.physics.lbl.gov
SUMMARY:Andrea Gabrielli\, Michele Papucci\, Zoltan Ligeti (LBNL) "Highlights from Morion EW and QCD"
DESCRIPTION:Abstract:  \n\nA brief overview of the main highlights discussed at Moriond 2016 is presented\, with particular focus on LHC results\, neutrino and flavour physics. One of the main topic of the conference is the first look at the results from LHC after its first run of 13 TeV proton-proton collisions ended last year. The experimental data confirm the Standard Model expectation concerning the vector boson\, top and Higgs production rates. Searches for new resonances decaying into two photons in the ATLAS and CMS experiments have shown that the most significant deviation from the background prediction is observed at a diphoton invariant mass around 750 GeV. At the same time\, the negative searches for signals of new phenomena decaying into other final state tightly constrained many new-physics scenarios\, challenging previous theoretical wisdom and opening new perspectives in fundamental physics.
URL:https://rpm.physics.lbl.gov/event/andrea-gabrielli-michele-papucci-zoltan-ligeti-lbnl-highlights-from-morion-ew-and-qcd/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160324T160000
DTEND;TZID=America/Los_Angeles:20160324T170000
DTSTAMP:20260414T191310
CREATED:20160127T103249Z
LAST-MODIFIED:20160127T103249Z
UID:211-1458835200-1458838800@rpm.physics.lbl.gov
SUMMARY:Simone Pagan Griso (LBNL) "Search for Supersymmetric Long-Lived Particles with the ATLAS Experiment"
DESCRIPTION:Abstract:\nSupersymmetry is a well motivated extension of the Standard Model of particle physics\,\nalthough its realization in nature has yet to be proven.\nThe main efforts at the Large Hadron Collider to probe for supersymmetry\nat the electroweak mass scale focus on the so-called “prompt” signatures.\nIn these cases\, the super-symmetric partners of the known Standard Model particles\neither decay close to the production point\, within the detector resolution\, or\ntraverse the detector with no strong interaction\, leaving usually a large imbalance\nof momentum in the transverse plane.\nIn this seminar I will focus on searches for supersymmetric particles\nwith a significant lifetime\, that could be either directly or indirectly measured.\nSuch particles can easily evade current constraints based on prompt signatures.\nAfter a brief introduction on the main mechanisms leading to long-lived\nparticles in supersymmetric theories\, I will review the experimental techniques\nemployed in these searches using the ATLAS detector.\nI will then present an overview of the data analysis results\, with a particular focus on\nthe most recent ones.
URL:https://rpm.physics.lbl.gov/event/simone-pagan-griso-lbnl-tba/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20160317T160000
DTEND;TZID=UTC:20160317T170000
DTSTAMP:20260414T191310
CREATED:20150916T161356Z
LAST-MODIFIED:20150916T161356Z
UID:128-1458230400-1458234000@rpm.physics.lbl.gov
SUMMARY:Michael Kagan (Stanford) "Exploring the TeV Energy Regime with Double Higgs Production at the LHC"
DESCRIPTION:Abstract:\n\nThe discovery of the Higgs boson by the ATLAS and CMS experiments at the Large Hadron Collider provides a novel tool to search for signs of physics beyond the Standard Model at the LHC. The Higgs boson is central to two frontiers in high energy physics today: the fundamental understanding of the mechanism for Electroweak Symmetry Breaking and for the generation of particle masses\, and the exciting prospect of discovering new heavy TeV-scale particles interacting with the Higgs boson.  Such new particles are predicted in theories of physics beyond the Standard Model which may incorporate  additional symmetries or extra dimensions of space-time.   In this talk\, I will focus on how the search for di-Higgs boson production using the four bottom quark decay channel is central to probing both of these frontiers. I will discuss the critical developments in bottom quark identification that have enabled such searches for the first time.  I will also discuss key advancements in high performance silicon pixel detectors and in new pattern recognition techniques inspired by cutting-edge machine learning and computer vision methods that are extending the future discovery potential at the LHC.
URL:https://rpm.physics.lbl.gov/event/reserved-12/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160315T160000
DTEND;TZID=America/Los_Angeles:20160315T170000
DTSTAMP:20260414T191310
CREATED:20160121T171034Z
LAST-MODIFIED:20160121T171034Z
UID:207-1458057600-1458061200@rpm.physics.lbl.gov
SUMMARY:Dominick Olivito (CERN) "Searches for Dark Matter and Supersymmetry at 13 TeV with CMS"
DESCRIPTION:Abstract: \n\nResults will be presented from searches looking for a large transverse momentum imbalance motivated by dark matter and supersymmetry\, using a sample of proton-proton collisions collected at a center-of-mass energy of 13 TeV in 2015 with the CMS detector at the LHC.  An inclusive analysis for hadronic jets and missing transverse momentum (MET)\, measured using the MT2 variable\, will be covered\, as well as an analysis searching for a pair of leptons with opposite-sign and the same flavor\, hadronic jets\, and MET.  The latter analysis looks for one of two features in the mass spectrum of the lepton pair: either a resonance compatible with the Z boson mass or a kinematic edge.  The results of each search are interpreted in simplified models of supersymmetry.
URL:https://rpm.physics.lbl.gov/event/dominick-olivito/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20160310T160000
DTEND;TZID=UTC:20160310T170000
DTSTAMP:20260414T191310
CREATED:20150916T161334Z
LAST-MODIFIED:20150916T161334Z
UID:127-1457625600-1457629200@rpm.physics.lbl.gov
SUMMARY:Shirley Ho (Carnegie Mellon University) " Joining Forces Against the Dark Universe: From the Cosmic Microwave Background to the Large Scale Structure"
DESCRIPTION:Abstract: \n\nDespite tremendous recent progress\, gaps remain in our knowledge of our understanding of the Universe. We have not yet pinned down the properties of dark energy\, nor have we confirmed Einstein’s theory of Gravity at the largest scales.Current and upcoming large sky surveys of the Cosmic Microwave Background (CMB)\, Large Scale Structure (LSS) in galaxies\, quasars and Lyman-alpha forest present us with the best opportunity to understand  properties of the Universe.\n\nI will first review recent cosmology results from CMB and LSS\, concentrating on BOSS results using Baryon Acoustic Oscillations and Redshift Space Distortions. I will then introduce novel cosmological probes which combine CMB with LSS directly. These novel probes will open new windows into the momentum field of the Universe and Gravity at the largest scales. I will finally put these into the context of upcoming surveys such as Dark Energy Spectroscopic Instrument (DESI)\, Wide Field Infrared Survey Telescope (WFIRST) and CMB S4.
URL:https://rpm.physics.lbl.gov/event/reserved-11/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20160308T160000
DTEND;TZID=America/Los_Angeles:20160308T170000
DTSTAMP:20260414T191310
CREATED:20160303T131221Z
LAST-MODIFIED:20160303T131221Z
UID:227-1457452800-1457456400@rpm.physics.lbl.gov
SUMMARY:Sho Uemura (Stanford) "The Heavy Photon Search Experiment at Jefferson Lab"
DESCRIPTION:Abstract:\nThe Heavy Photon Search (HPS) is a new experiment at Jefferson Lab searching for massive U(1) vector bosons (also known as heavy photons\, dark photons\, or A prime with a weak effective coupling to electric charge. The heavy photon is motivated as part of a hidden sector” model of dark matter\, where it would mediate the self-interaction of dark matter and the interaction of dark and ordinary matter. HPS is sensitive to heavy photons of mass 10-500 MeV with coupling strength episilon squared of 1e-5 to 1e-10. The HPS experiment is designed to produce heavy photons in a process analoguous to bremsstrahlung using an electron beam on a fixed target\, and detect decays to e+e pairs with two signatures (invariant mass resonance and displaced decay vertex). The detector is a compact\, large-acceptance forward spectrometer comprising a silicon microstrip tracker for momentum measurement and vertexing and an electromagnetic calorimeter for triggering on e+e. Precise beamline controls\, high-rate trigger and DAQ\, and good time resolution are needed for a detector that comes within 0.5 mm of the beam and is sensitive down to  15 mrad from the beam plane\, and must cope with the intense beam background in this environment. A low-mass tracker and clean track reconstruction are needed for the best sensitivity. This talk will describe the HPS experiment and its current status after test\, commissioning\, and engineering runs.
URL:https://rpm.physics.lbl.gov/event/sho-uemura-stanford-the-heavy-photon-search-experiment-at-jefferson-lab/
END:VEVENT
END:VCALENDAR