BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//LBNL Physics Division Research Progress Meetings - ECPv6.8.3//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://rpm.physics.lbl.gov
X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20180311T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20181104T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180503T160000
DTEND;TZID=America/Los_Angeles:20180503T170000
DTSTAMP:20260413T192912
CREATED:20180329T134931Z
LAST-MODIFIED:20180329T134931Z
UID:783-1525363200-1525366800@rpm.physics.lbl.gov
SUMMARY:Alan Schwartz (University of Cincinnati) "Challenging the Standard Model with the Belle(II) Experiment"
DESCRIPTION:Abstract:\nThe Belle experiment in Japan began taking data in the late 1990’s and went on to record the world’s largest sample of B-anti-B meson pairs produced in a quantum correlated state. This initial state allowed Belle\, and the BaBar experiment at SLAC\, to measure CP violation in B decays with high accuracy. These measurements contributed to the awarding of the 2008 Nobel Prize in Physics to Kobayashi and Maskawa for their theory of CP violation. However\, other measurements have exhibited discrepancies with the Standard Model\, e.g.\, measurements of |Vub| and |Vcb| \, R(D) and R(D*)\, etc. Over the past several years\, the Belle detector and accelerator complex have been rebuilt and significantly upgraded to become the Belle II experiment. Belle II is designed to record 50 times the data set that Belle recorded\, and with much improved detector performance. This forthcoming data should resolve several discrepancies observed by Belle and BaBar. Here we review some recent results from Belle and discuss the physics program and current status of Belle II.
URL:https://rpm.physics.lbl.gov/event/alan-schwartz-university-of-cincinnati/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180510T160000
DTEND;TZID=America/Los_Angeles:20180510T170000
DTSTAMP:20260413T192912
CREATED:20180507T113212Z
LAST-MODIFIED:20180507T113212Z
UID:841-1525968000-1525971600@rpm.physics.lbl.gov
SUMMARY:Christian Bauer (LBNL) "GENEVA: Combining perturbative calculations with parton showers"
DESCRIPTION:ABSTRACT:\nI will discuss the event generator GENEVA\, which for the first time combines fixed order and resummed perturbative calculations with parton showering and hadronization. I will explain the basic physics concepts underlying GENEVA\, and show how they can be used to achieve in principle any accuracy desired. After presenting physics results on the production of vector boson + jets at the LHC\, I will finish by giving an overview of how to use GENEVA.
URL:https://rpm.physics.lbl.gov/event/christian-bauer-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:20180517T160000
DTEND;TZID=America/Los_Angeles:20180517T170000
DTSTAMP:20260413T192912
CREATED:20180423T155352Z
LAST-MODIFIED:20180423T155352Z
UID:836-1526572800-1526576400@rpm.physics.lbl.gov
SUMMARY:Chris Fassnacht (UC Davis) "Cosmological parameters from strong gravitational lenses"
DESCRIPTION:Abstract:\nRecent measurements of the Hubble Constant (H_0) through distance\nladder techniques have revealed a noticeable tension with the\nPlanck H_0 value that was obtained under the assumption of the cosmological\n“standard model”\, i.e.\, a flat Lambda cold dark matter cosmology. Is this\ntension an indication that modifications to the standard model are\nnecessary\, or is it the sign of unknown systematic effects in one or\nboth of the techniques? To address this question requires additional\nhigh-precision measurements with techniques that are independent of\nthe distance ladder. The time delay strong lensing technique\, in\nwhich gravitational lensing by a massive galaxy produces multiple\nimages of a time-variable quasar\, fulfills these requirements. I will\npresent recent results from the H0licow program\, in which the analysis\nof just three time-delay strong lenses has produced a 3.8% measurement\nof H_0\, and discuss the implications for other cosmological parameters\,\nincluding those describing dark energy. I will also discuss the\nfuture prospects of this technique in the era of large sky surveys and\nextremely large telescopes.
URL:https://rpm.physics.lbl.gov/event/chris-fassnacht-uc-davis-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:20180529T160000
DTEND;TZID=America/Los_Angeles:20180529T170000
DTSTAMP:20260413T192912
CREATED:20180514T084613Z
LAST-MODIFIED:20180514T084613Z
UID:851-1527609600-1527613200@rpm.physics.lbl.gov
SUMMARY:Nicholas Carlini (UCB) "Adversarial Machine Learning"
DESCRIPTION:Abstract:\nMany fundamental properties of neural networks are still not well\nunderstood. This talk studies two of these from an adversarial perspective.\nI begin with my main line of research and examine the apparently-fundamental\nsusceptibility of neural networks to adversarial examples. I develop effective\nalgorithms for generating adversarial examples and find that most most training\nregimes are ineffective at increasing robustness. Then\, I perform a brief\nexamination of neural network memorization\, and demonstrate that training\ndata can be efficiently extracted from a trained model given only black-box\naccess to that model. I conclude with directions for future research.
URL:https://rpm.physics.lbl.gov/event/nicholas-carlini-ucb-adversarial-machine-learning/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180531T160000
DTEND;TZID=America/Los_Angeles:20180531T170000
DTSTAMP:20260413T192912
CREATED:20180507T131320Z
LAST-MODIFIED:20180507T131320Z
UID:844-1527782400-1527786000@rpm.physics.lbl.gov
SUMMARY:Michael Hance (UCSC) "Searching for Compressed SUSY at the Energy Frontier"
DESCRIPTION:ABSTRACT:\nWeak-scale Supersymmetry can help to resolve several puzzles presented by the Standard Model\, including the nature of dark matter and the naturalness of the Higgs mass\, and has motivated a robust search program at the Large Hadron Collider. Searches for direct production of Supersymmetric partners of weak bosons and leptons are particularly interesting as probes of dark matter and naturalness\, but are challenged by small cross sections\, low-momentum decay products\, and multiple Standard Model backgrounds. I will review efforts by the ATLAS experiment to discover such new particles\, with an emphasis on scenarios with “compressed” mass spectra containing nearly-mass-degenerate states. I will discuss recent LHC results\, as well as prospects for discovery in Run 2 and beyond.
URL:https://rpm.physics.lbl.gov/event/michael-hance-ucsc-tba/
END:VEVENT
END:VCALENDAR