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X-WR-CALDESC:Events for INPA
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DTSTART:20170312T100000
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DTSTART;TZID=America/Los_Angeles:20170303T120000
DTEND;TZID=America/Los_Angeles:20170303T130000
DTSTAMP:20260528T001846
CREATED:20170221T191333Z
LAST-MODIFIED:20170303T164338Z
UID:140-1488542400-1488546000@inpa.lbl.gov
SUMMARY:Martina Gerbino (NORDITA) - Three Neutrinos in Cosmology (to Say Nothing of Laboratory)
DESCRIPTION:Neutrinos are the only standard model particles of unknown mass. Thus\, measuring their mass is one of the leading goals in fundamental physics. Cosmology currently provides the tightest bounds on the sum of the neutrino masses and the possibility that next generation experiments can provide a detection looks promising. Then\, further questions would have to be addressed\, such as the neutrino hierarchy and the neutrino nature. In this talk\, I will discuss the treasure trove of information about massive neutrinos that we can collect from different cosmological probes. I will stress the importance of extending our interest to laboratory searches\, such as kinematic measurements and neutrino less double-beta decay experiments\, for going beyond measuring the neutrino mass. Finally\, I will choose a different angle and show how massive neutrino unknowns can affect the constraints on inflationary models.
URL:https://inpa.lbl.gov/event/martina-gerbino-nordita/
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DTSTART;TZID=America/Los_Angeles:20170310T120000
DTEND;TZID=America/Los_Angeles:20170310T130000
DTSTAMP:20260528T001846
CREATED:20170203T190600Z
LAST-MODIFIED:20170301T171356Z
UID:129-1489147200-1489150800@inpa.lbl.gov
SUMMARY:Sandra Miarecki  - Earth vs. Neutrinos: first measurements of neutrino absorption in the Earth and the muon neutrino-to-nucleon cross section above 1 TeV with the IceCube Detector
DESCRIPTION:Bio: \nSandy Miarecki is a retired Air Force test pilot\, PhD graduate of the University of California-Berkeley\, and an affiliate member of LBL after completing her dissertation research at LBL.  She is currently an assistant professor of physics at the US Air Force Academy in Colorado Springs. \nThe IceCube Detector at the South Pole was constructed to measure the flux of high-energy neutrinos and to try to identify their cosmic sources. In addition to these astrophysical neutrinos\, IceCube also detects the neutrinos that result from cosmic ray interactions with the atmosphere. These atmospheric neutrinos can be used to measure the total muon neutrino-to-nucleon cross section by measuring neutrino absorption in the Earth for the first time. The measurement involves isolating a sample of 10\,784 Earth-transiting muons detected by IceCube in its 79-string configuration. The cross-section is determined using a two-dimensional fit in measured muon energy and zenith angle and is presented as a multiple of the Standard Model expectation as calculated by Cooper-Sarkar\, Mertsch\, and Sarkar in 2011. A multiple of 1.0 would indicate agreement with the Standard Model. The results of this analysis find the multiple to be 1.30 (+0.21 -0.19 statistical) (+0.40 -0.44 systematic) for the neutrino energy range of 6.3 to 980 TeV\, which is in agreement with the Standard Model expectation.
URL:https://inpa.lbl.gov/event/raul-hennings-yeomans-ucb-tentative/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
ORGANIZER;CN="Kawana Yancey":MAILTO:kyancey@lbl.gov
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DTSTART;TZID=America/Los_Angeles:20170313T120000
DTEND;TZID=America/Los_Angeles:20170313T130000
DTSTAMP:20260528T001846
CREATED:20170221T224826Z
LAST-MODIFIED:20170303T221149Z
UID:145-1489406400-1489410000@inpa.lbl.gov
SUMMARY:Quentin Riffard - Direct detection of dark matter with the DarkSide program
DESCRIPTION:A large number of astrophysical and cosmological observations at different scales supports the existence of a cold dark matter component in the Universe. At the Universe scale\, this component is uniformly distributed and represents roughly 26% of the total mass-energy density of the Universe. The Weakly Interacting Massive Particle (WIMP)\, a generic particle\, is one of the leading dark matter particle candidates: a massive particle interacting only through weak and gravitational interactions. This candidate is supported by the so-called “WIMP miracle” and could also be supported in particle physics by supersymmetric models. At the Milky Way scale\, dark matter forms a static halo surrounding our galaxy. The relative motion of the solar system through the dark halo produces a flux of WIMP on Earth. Through the weak interaction\, WIMP could interact with ordinary matter producing nuclear recoils (NR) by elastic scattering. In the last two decades\, a large experimental effort has been deployed by international collaborations in order to probe a direct detection of NR from WIMP-nucleus interactions. In this experimental context\, multi-tone noble liquid TPC are good candidate for the dark matter searches. The DarkSide program is a step approach program aiming to build a large TPC filled with liquid argon (LAr). The first part of this presentation focuses on the potential of LAr as a target for dark matter searches\, on the latest results from the DS-50 detector and the perspectives of the DarkSide program: the DS-20k detector. For a complete understanding of LAr data\, the characterisation of several parameters is fundamental such as the scintillation efficiency for NR and the pulse-shape parameter for the NR/ER discrimination is fundamental. In order to improve the knowledge on these parameters\, the ARIS collaboration built a small LAr double-phase TPC. A first data taking with mono chromatic neutrons was performed in Orsay (France) in last October. The second part of this presentation presents a status of the ARIS data analysis and a discussion of the strategy to extract the parameters.
URL:https://inpa.lbl.gov/event/quentin-riffard/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20170317T120000
DTEND;TZID=America/Los_Angeles:20170317T130000
DTSTAMP:20260528T001846
CREATED:20170221T224938Z
LAST-MODIFIED:20170303T212649Z
UID:147-1489752000-1489755600@inpa.lbl.gov
SUMMARY:Jessie Muir (Michigan) - Unbiasing cosmology on the largest scales
DESCRIPTION:One of the most exciting areas of research in cosmology is the effort to extract information about fundamental physics from observations of the universe on large scales.  With the advent of increasingly large cosmological datasets (and correspondingly small statistical uncertainties)\, future progress in the field will fundamentally be determined by our ability to understand and account for systematic errors. In this talk\, I’ll discuss two projects which further that ability: a study of how reliably we can separate primordial and late-time contributions to large-angle features of the the Cosmic Microwave Background (CMB) and the development of a blinding strategy to prevent experimenters’ bias from influencing the Dark Energy Survey’s cosmological analysis.
URL:https://inpa.lbl.gov/event/jessie-muir-michigan/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20170324T120000
DTEND;TZID=America/Los_Angeles:20170324T130000
DTSTAMP:20260528T001846
CREATED:20170221T225101Z
LAST-MODIFIED:20170322T150124Z
UID:149-1490356800-1490360400@inpa.lbl.gov
SUMMARY:Bradford Welliver (LBNL) - Results and Current Status of the SuperCDMS Soudan Experiment
DESCRIPTION:The SuperCDMS experiment is a dark matter search that utilizes an array of 15 patterned Ge crystals\, called iZIPs with a total mass of 9kg. SuperCDMS has completed operations at the Soudan Underground Laboratory and reported results on low-mass (M  10 GeV/c^2) WIMP search analysis with 1700 kg-days of exposure using 10 of the iZIP detectors is nearing completion. This talk will present an overview of the SuperCDMS detector technology\, recap the low-mass search results and discuss the analysis strategy and status of the high mass WIMP search.
URL:https://inpa.lbl.gov/event/bradford-welliver-lbnl/
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