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PRODID:-//LBNL Physics Division Research Progress Meetings - ECPv6.8.3//NONSGML v1.0//EN
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X-ORIGINAL-URL:https://rpm.physics.lbl.gov
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:20170312T100000
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DTSTART:20171105T090000
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DTSTART;TZID=America/Los_Angeles:20170914T160000
DTEND;TZID=America/Los_Angeles:20170914T170000
DTSTAMP:20260419T052214
CREATED:20170424T155049Z
LAST-MODIFIED:20170424T155049Z
UID:538-1505404800-1505408400@rpm.physics.lbl.gov
SUMMARY:Cora Dvorkin (Harvard) "Discovering New Physics Beyond the Standard Model with Cosmological Data Sets"
DESCRIPTION:Abstract:\nCosmological observations have provided us with answers to age-old questions\, involving the age\, geometry\, and composition of the universe. However\, there are profound questions that still remain unanswered. I will describe ongoing efforts to shed light on some of these questions.\nIn the first part of this talk\, I will explain how we can use measurements of the CMB and the large-scale structure of the universe to reconstruct the detailed physics of much earlier epochs\, when the universe was only a tiny fraction of a second old. In particular\, I will show how we can probe the shape of the inflationary potential\, extra degrees of freedom during inflation\, and the signature of possible particles with mass and spin during this period.\nIn the last part of the talk\, I will discuss how we can use observations at large scales and sub-galactic scales (through strong gravitational lensing) to improve our understanding of another open question in fundamental physics: the particle nature of dark matter.
URL:https://rpm.physics.lbl.gov/event/cora-dvorkin-harvard-tba/
LOCATION:70A-3377\, 70A-3377
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20170921T160000
DTEND;TZID=America/Los_Angeles:20170921T170000
DTSTAMP:20260419T052214
CREATED:20170621T152537Z
LAST-MODIFIED:20170621T152537Z
UID:557-1506009600-1506013200@rpm.physics.lbl.gov
SUMMARY:Kev Abazajian (UC\, Irvine) "Candidate Signals and Stringent Constraints from Dark Matter in the Sky"
DESCRIPTION:Abstract:\nI will discuss analyses leading to two recent candidate detections of photons from dark matter. Specifically\, these are: first\, gamma rays in a continuum “bump” at a few GeV which can be due to WIMP-like dark matter annihilation in the Galactic Center; and\, second\, X-rays from clusters of galaxies and Andromeda consistent with monoenergetic 3.55 keV photons from dark matter decay such as that predicted from sterile neutrino dark matter. Commensurately\, there are also stringent constraints on these signals. I will discuss the particle and cosmological model implications of both.
URL:https://rpm.physics.lbl.gov/event/kev-abazajian-uc-irvine-tba/
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:20170928T160000
DTEND;TZID=America/Los_Angeles:20170928T170000
DTSTAMP:20260419T052214
CREATED:20170911T083146Z
LAST-MODIFIED:20170911T083146Z
UID:626-1506614400-1506618000@rpm.physics.lbl.gov
SUMMARY:Bertrand Echenard (Caltech) "Probing light dark matter with the LDMX experiment"
DESCRIPTION:ABSTRACT:\nElucidating the nature of dark matter is one of the central challenges\nin fundamental physics. Dark matter originating as a thermal relic\nfrom the early Universe is arguably one of the most compelling\nparadigm\, and WIMP searches have been the main focus of past\nexperimental efforts. Not as extensively explored\, the possibility of\nlight (sub-GeV) thermal dark matter could arise naturally if it is\npart of a dark sector neutral under all Standard Model forces. The\n“Light Dark Matter eXperiment” (LDMX) proposes to explore light\nthermal dark matter using an electron fixed-target missing momentum\napproach with a low current\, high-repetition beam. The expected\nsensitivity would surpassing by orders of magnitude the reach of any\nprevious or currently envisioned experiment\, and decisively test many\nsub-GeV thermal dark matter scenarios.
URL:https://rpm.physics.lbl.gov/event/bertrand-echenard-caltech-tba/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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