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X-WR-CALNAME:LBNL Physics Division Research Progress Meetings
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X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
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DTSTART:20180311T100000
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181004T160000
DTEND;TZID=America/Los_Angeles:20181004T170000
DTSTAMP:20260413T121945
CREATED:20180913T112224Z
LAST-MODIFIED:20180913T112224Z
UID:905-1538668800-1538672400@rpm.physics.lbl.gov
SUMMARY:Kyle Helson (NASA Goddard) "The Status and Outlook of Cosmic Microwave Background Polarization Measurements"
DESCRIPTION:Abstract:\nThe detailed characterization of the intensity and polarization Cosmic Microwave Background (CMB) radiation provides a powerful tool to constrain the properties of early Universe. The polarization induced by a stochastic gravitational wave background in this epoch induces a distinctive and measurable signature of primordial inflationary processes. Presently the field has a healthy contingent of ground\, balloon\, and space based missions. In this talk I will discuss a brief history of CMB measurements\, the current status of the field and outlook for the future. I will also discuss on-going work at NASA Goddard Space Flight Center on the development of polarization-sensitive detectors for a future satellite CMB polarization mission and their application in ground based instruments.
URL:https://rpm.physics.lbl.gov/event/kyle-helson-tba-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:20181011T160000
DTEND;TZID=America/Los_Angeles:20181011T170000
DTSTAMP:20260413T121945
CREATED:20180711T103828Z
LAST-MODIFIED:20180711T103828Z
UID:885-1539273600-1539277200@rpm.physics.lbl.gov
SUMMARY:Qian Xin (BNL) "Development of LArTPC for Neutrino Physics"
DESCRIPTION:Abstract:\nLiquid Argon Time Projection Chamber (LArTPC)\, with its mm-scale position resolution and the full-active-volume imaging-aided calorimetry\, is an excellent device to detect accelerator neutrinos at GeV energy range. This technology may hold the key to search for new CP violation in the lepton sector\, to determine the neutrino mass hierarchy\, to precisely measure neutrino mixing parameters\, to search for baryon number violation\, and to search for sterile neutrino(s). In this talk\, I will review the current status of the detector development. In particular\, the challenges in TPC signal processing and event reconstruction will be discussed among other subjects.
URL:https://rpm.physics.lbl.gov/event/qian-xin-bnl-development-of-lartpc-for-neutrino-physics/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181018T160000
DTEND;TZID=America/Los_Angeles:20181018T170000
DTSTAMP:20260413T121945
CREATED:20180917T121935Z
LAST-MODIFIED:20180917T121935Z
UID:908-1539878400-1539882000@rpm.physics.lbl.gov
SUMMARY:Ning Bao (UCB/LBNL) "Quantum Information and Quantum Gravity"
DESCRIPTION:ABSTRACT:\nThere has been much recent interest at the intersection of the fields of Quantum Information and Quantum Gravity. In this talk\, I will go over some of the motivating principles/important work that has been done in this area\, and explain some current research promising research trends.
URL:https://rpm.physics.lbl.gov/event/ning-bao-ucb-lbnl-tba/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181023T160000
DTEND;TZID=America/Los_Angeles:20181023T170000
DTSTAMP:20260413T121945
CREATED:20180917T145120Z
LAST-MODIFIED:20180917T145120Z
UID:911-1540310400-1540314000@rpm.physics.lbl.gov
SUMMARY:Matthias Neubert (U. Mainz) "Effective Field Theory after a New-Physics Discovery"
DESCRIPTION:ABSTRACT: \n\nWhen a new heavy particle is discovered at the LHC\, it will be interesting to study its decays into Standard Model particles using an effective field-theory framework. We point out that the proper effective theory must be based on non-local operators defined in soft-collinear effective theory (SCET). For the interesting case where the new resonance is a gauge-singlet spin-0 boson\, which is the first member of a new sector governed by a mass scale M\, we show how a consistent scale separation between M and the electroweak scale v is achieved up to next-to-next-to-leading order in \lambda~v/M. The Wilson coefficients in the effective Lagrangian depend in a non-trivial way on the mass of the new resonance and the masses of yet undiscovered heavy particles. Large logarithms of the ratio M/v can be systematically resummed using the renormalization group. We develop a SCET toolbox\, with which it is straightforward to construct the relevant effective Lagrangians for new heavy particles with other charges and spin.
URL:https://rpm.physics.lbl.gov/event/matthias-neube-u-mainz-tba/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181025T160000
DTEND;TZID=America/Los_Angeles:20181025T170000
DTSTAMP:20260413T121945
CREATED:20181018T081653Z
LAST-MODIFIED:20181018T081653Z
UID:923-1540483200-1540486800@rpm.physics.lbl.gov
SUMMARY:Laura Newburgh (Yale U.) " Forefronts of Cosmology: Beyond Standard Model Physics with Upcoming CMB Instruments"
DESCRIPTION:Abstracts\nUpcoming new instruments to measure the polarized CMB promise to provide discriminatory limits on inflation\, the number of light relic particles\, and the sum of the neutrino masses\, ushering in a new era of using the CMB as a probe of particle physics. Achieving these science goals requires highly sensitive instruments that are composed of enormous arrays of low noise detectors. In addition\, systematic errors and foreground removal must be improved to lower the systematics floor below the statistical errors\, necessitating dramatic improvements in calibration precision. In this talk\, I will describe Simons Observatory (coming online in ~2021) and CMB-S4 (coming online in ~2027)\, their science goals\, and how the twin requirements for sensitivity and systematics require a new approach to software for readout\, data acquisition\, and control systems. I will also discuss future directions for cosmology\, including work in 21cm instruments to improve our understanding of the nature of Dark Energy.
URL:https://rpm.physics.lbl.gov/event/laura-newburgh-yale-u-forefronts-of-cosmology-beyond-standard-model-physics-with-upcoming-cmb-instruments/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181030T160000
DTEND;TZID=America/Los_Angeles:20181030T170000
DTSTAMP:20260413T121945
CREATED:20180917T145212Z
LAST-MODIFIED:20180917T145212Z
UID:913-1540915200-1540918800@rpm.physics.lbl.gov
SUMMARY:Caterina Vernieri (Stanford) "Higgs to Beauty Quarks: First Observation of the Big Missing Piece"
DESCRIPTION:ABSTRACT:\nThe Higgs boson discovery at the LHC marked a historic milestone in the study of fundamental particles and their interactions. Over the last six years\, we have begun measuring its properties\, which are essential to build a deep understanding of the Higgs sector of the Standard Model and to potentially uncover new phenomena. The Higgs’ favored decay mode to beauty (b) quarks (~60%) had so far remained elusive because of the overwhelming background of b-quark production due to strong interactions. Observing the Higgs decay to b-quarks was one of the critical missing pieces of our knowledge of the Higgs sector. Measuring this decay is a fundamental step to confirm the mass generation for fermions and may also provide hints of physics beyond the Standard Model. The CMS observation of the decay of the SM Higgs boson into a pair of b-quarks exploiting an exclusive production mode (VH) is yet another major milestone. This experimental achievement at the LHC\, considered nearly impossible in the past\, makes use of several advanced machine learning techniques to identify the b-quark distinctive signature\, improve the Higgs boson mass resolution\, and discriminate the Higgs boson signal from background processes.
URL:https://rpm.physics.lbl.gov/event/caterina-vernieri-stanford-tba/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
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