<p>Joint Theory Seminar Speaker: Asher Berlin (SLAC)<br />mail: berlin@slac.stanford.edu<br />Title: Thermal Relics Below an MeV<br />Host: Verhaaren<br />Room: 432<br />Abstract: I will discuss a class of models in which thermal dark matter is lighter than an MeV. If dark matter thermalizes with the Standard Model below the temperature of neutrino-photon decoupling, constraints from measurements of the effective number of neutrino species are alleviated. This framework motivates new experiments in the direct search for sub-MeV thermal dark matter and light force carriers.</p>
<p>Particle Physics Seminar Speaker: Vincent Fischer</p><p>Institution: UC Davis</p><p>Title: First measurement of the neutron capture cross section on argon for the DUNE experiment</p><p>Host: Svoboda</p><p>Room: 285</p><p>Abstract: </p>
<p>Joint Theory Seminar Speaker: Wolfgang Altmannshofer (UCSC)<br />mail: waltmann@ucsc.edu<br />Title: New Physics in Rare B Decays<br />Host: Verhaaren<br />Room: 432<br />Abstract: I will discuss the implications of LHCb results that show intriguing hints for lepton flavor universality violation in rare B meson decays. These hints are fully consistent with several other anomalies that have been observed in rare B decays over the last few years. A very good description of all the data is obtained by new physics in form of a single four-fermion contact interaction. <br />I will discuss new physics models that could explain the experimental results as well as further measurements that could help establishing new physics in rare B decays with more data.</p>
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High-Energy Seminars
Time:
4:00pm - 5:00pm
Send Reminder:
Yes - 1 day 6 hour 30 minutes before start
Description:
<p>Particle Physics Seminar Speaker: Vincent Fischer</p><p>Institution: UC Davis</p><p>Title: First measurement of the neutron capture cross section on argon</p><p>Host: Svoboda</p><p>Room: 285</p><p>Abstract: </p>
User:
High-Energy Seminars
Time:
4:10pm - 5:10pm
Description:
<p>Particle Physics Seminar:Vincent Fischer<br />Speaker: Vincent Fischer</p><p>Institution: UC Davis</p><p><br />Title:Neutron capture in argon: From New Mexico to South Dakota</p><p><br />Host: Svoboda</p><p><br />Room: 285</p><p><br />Abstract: </p><p>Which neutrino is the heaviest and which is the lightest? Do neutrinos violate the one of the most fundamental symmetry in particle physics? Could they explain the matter-antimatter asymmetry in the Universe? How much information can neutrinos provide about supernovae explosions? Within the next decade, the Deep Underground Neutrino Experiment (DUNE) will address these burning questions in neutrino physics by making full use of the cutting-edge technology of the Liquid Argon Time Projection Chamber (LArTPC). However, given the high level of precision needed to reach its goals, the DUNE LArTPC will need to be well-understood over a wide range of particle types and energies.<br /><br />During this seminar, I will introduce the DUNE experiment and its physics goals before focusing on the use of neutrons as a calibration method in liquid argon detectors. I will then present the ACED experiment, carried out by the UC Davis neutrino group at the Los Alamos National Laboratory, and our measurement of the neutron capture cross section in argon.</p><p> </p>
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