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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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TZID:America/Los_Angeles
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TZOFFSETFROM:-0800
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DTSTART:20180311T100000
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180109T160000
DTEND;TZID=America/Los_Angeles:20180109T170000
DTSTAMP:20260416T022724
CREATED:20171120T104422Z
LAST-MODIFIED:20171120T104422Z
UID:679-1515513600-1515517200@rpm.physics.lbl.gov
SUMMARY:Oindree Banerjee (Ohio State University) "Searching for ultra-high-energy neutrinos with the Antarctic Impulsive Transient Antenna "
DESCRIPTION:Abstract:\n\nUltra-high-energy (> 10^18 eV) neutrinos remain undiscovered in this era of rapid growth in multi-messenger astronomy. These neutral and weakly-interacting particles can travel cosmic distances without attenuation and point straight back to their source\, rendering them promising messengers. Detection of these elusive particles requires an enormous instrumented volume of a dielectric material such as water\, ice\, salt\, etc. Use of radio Cherenkov method enables this at a relatively low cost. The Antarctic Impulsive Transient Antenna (ANITA) is a NASA-funded long-duration balloon experiment that is launched from near McMurdo Station\, Antarctica\, to fly over the continent in roughly circular orbits in the stratosphere for a month. ANITA looks for the radio signature from ultra-high-energy neutrino interaction in the ice below. There have been four flights of ANITA so far. I will review the principles underlying radio detection of neutrinos by ANITA\, the ANITA instrument and recent developments in the hardware and electronics of ANITA. I will show results from the currently ongoing search for a diffuse flux of neutrinos in the data from the third flight of ANITA.\n\nBio:\n\nI received my Bachelor’s degree in Physics from North Carolina State University. Currently\, I am a 5th year graduate student in Physics at Ohio State University. For the ANITA-IV mission\, I built\, tested and deployed electronics which\, for the first time\, were able to dynamically filter anthropogenic noise at tunable frequencies. These filters helped to triple the “effective livetime” of ANITA-IV compared to ANITA-III. In analysis\, I am working on new techniques for background rejection using data from the ANITA-II and ANITA-III flights.
URL:https://rpm.physics.lbl.gov/event/oindree-banerjee-ohio-state-university/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180111T160000
DTEND;TZID=America/Los_Angeles:20180111T170000
DTSTAMP:20260416T022724
CREATED:20171120T104451Z
LAST-MODIFIED:20171120T104451Z
UID:681-1515686400-1515690000@rpm.physics.lbl.gov
SUMMARY:Mengjiao Xiao (University of Maryland) "Probing the Nature of the Universe from the Chinese Underground Experiments"
DESCRIPTION:Abstract:\nDespite the tremendous success of the Standard Model (SM) of particle physics\, it becomes more and more clear that the SM is far from complete. For example\, the non-zero neutrino mass was the first solid evidence beyond the SM\, but we still do not understand why neutrinos are so light\, and if they are their own anti-particles. We know that the mass of the universe is dominated by dark matter\, but we do not understand the nature of the dark matter. Exploring these unknowns may lead to fundamental science discoveries and deepen our understanding of the universe.\nDue to their feeble interactions with normal matter\, both neutrinos and dark matter are studied under low background environment in underground laboratories. This area of research is booming in China with a few underground facilities in operation or under construction. The first half of my talk will introduce the Jiangmen Underground Neutrino Observatory (JUNO)\, an experiment aiming to determine the neutrino mass ordering and to precisely measure oscillation parameters using a large liquid scintillator detector. I will then discuss the PandaX project\, a series of experiments using dual-phase xenon for dark matter direct detection in the China Jin-Ping underground Laboratory.\nBio:\nMengjiao Xiao\, Ph.D. of Shanghai Jiao Tong University in 2016\, now is postdoc at University of Maryland\, College Park. Working on PandaX and JUNO experiment.
URL:https://rpm.physics.lbl.gov/event/mengjiao-xiao-university-of-maryland/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180123T160000
DTEND;TZID=America/Los_Angeles:20180123T170000
DTSTAMP:20260416T022724
CREATED:20180105T093329Z
LAST-MODIFIED:20180105T093329Z
UID:701-1516723200-1516726800@rpm.physics.lbl.gov
SUMMARY:Chihway Chang (KICP/U. Chicago) "Cosmic Surveys in the Next Decade: Mapping the Landscape of the Universe"
DESCRIPTION:ABSTRACT:\nCosmology in the next decade will be driven by data. Exploiting the information one can extract from the ongoing and upcoming large surveys will give us the power to stress-test the LCDM model with unprecedented precision and open up windows for new physics. In this talk I will present some of our work in the Dark Energy Survey Collaboration and the Large Synoptics Survey Telescope Dark Energy Science Collaboration\, to analyse state-of-the-art galaxy survey data as well as getting ready for the next generation of data. I will focus on topics surrounding weak lensing analyses\, including cosmology from 2-point functions\, generating weak lensing mass maps\, and measuring the mass profiles at the outskirts of galaxy clusters.
URL:https://rpm.physics.lbl.gov/event/chihway-chang/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180125T160000
DTEND;TZID=America/Los_Angeles:20180125T170000
DTSTAMP:20260416T022724
CREATED:20180105T093355Z
LAST-MODIFIED:20180105T093355Z
UID:703-1516896000-1516899600@rpm.physics.lbl.gov
SUMMARY:John Alison (U. Chicago) "Di-Higgs Production at the LHC: Current Status and Future Prospects"
DESCRIPTION:ABSTRACT:\nI will discuss motivations for searching for di-Higgs production at the LHC.  Recent results and projected sensitivities will be presented with emphasis on the dominant hh->4b channel.
URL:https://rpm.physics.lbl.gov/event/john-alison/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180130T160000
DTEND;TZID=America/Los_Angeles:20180130T170000
DTSTAMP:20260416T022724
CREATED:20180105T093504Z
LAST-MODIFIED:20180105T093504Z
UID:705-1517328000-1517331600@rpm.physics.lbl.gov
SUMMARY:Alex Drlica-Wagner (FNAL) "Using Cosmic Surveys to Understand the Fundamental Nature of Dark Matter"
DESCRIPTION:ABSTRACT:\nThe existence of dark matter is strong evidence for new physics beyond the Standard Model. While laboratory and collider searches for dark matter have advanced rapidly over the past several decades\, astrophysical observations currently provide the only robust\, positive\, empirical measurement of dark matter. Astrophysical observables can be directly linked to the fundamental properties of dark matter\, such as particle mass\, self-interaction cross section\, and self-annihilation rate. In this talk\, I will discuss how the Fermi Large Area Telescope (LAT) and the Dark Energy Survey (DES) have advanced our understanding of dark matter from observations of the smallest and most dark-matter-dominated galaxies. In addition\, I will discuss opportunities to build a cohesive dark matter program with the Large Synoptic Survey Telescope (LSST).
URL:https://rpm.physics.lbl.gov/event/alex-drlica-wagner/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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