<p>Joint Theory Seminar Speaker: Guido D'Amico (Stanford)<br />mail: damico.guido@gmail.com<br />Title: Neutrino flavour as a test of the explosion mechanism of core-collapse supernovae<br />Host: Verhaaren<br />Room: 432<br />Abstract: We study the ratio of neutrino-proton elastic scattering to inverse beta decay event counts, measurable in a scintillation detector like JUNO, as a key observable for identifying the explosion mechanism of a galactic core-collapse supernova. If the supernova is not powered by the core but rather, e.g., by collapse-induced thermonuclear explosion, then a prolonged period of accretion-dominated neutrino luminosity is predicted. Using 1D numerical simulations, we show that the distinct resulting flavour composition of the neutrino burst can be tested in JUNO with high significance, overcoming theoretical uncertainties in the progenitor star profile and equation of state.</p>
<p>Joint Theory Seminar Speaker: Yue Zhao (U. of Utah)<br />mail: zhaoyue@physics.utah.edu<br />Title: Searching for Dark Photon Dark Matter with Gravitational Wave Detectors<br />Host: Verhaaren<br />Room: 432<br />Abstract: If dark matter stems from the background of a very light gauge boson, this gauge boson could exert forces on test masses in gravitational wave detectors, resulting in displacements with a characteristic frequency set by the gauge boson mass. We outline a novel search strategy for such dark matter, assuming the dark photon is the gauge boson of U(1)_B or U(1)_{B-L}. We show that both ground-based and future space-based gravitational wave detectors have the capability to make a 5-sigma discovery in unexplored parameter regimes.</p>
<p>High Energy Seminar</p><p>Institution: Lawrence Livermore National Lab</p><p>Title: Directly measuring the neutrino mass with project 8</p><p>Host: </p><p>Room: 285</p><p>Abstract: </p>
Description:
St Patrick's Day
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High-Energy Seminars
Time:
1:30pm - 2:30pm
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Yes - 0 days 4 hour 0 minutes before start
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<p>Joint Theory Seminar Speaker: Zhenkang Zhang (UC Berkeley)<br />mail: zzkevin@berkeley.edu<br />Title: Reshaping effective field theory analyses: new challenges at the LHC and new tools for one-loop matching<br />Host: Verhaaren<br />Room: 432<br />Abstract: The lack of new physics discoveries has not only motivated increasing use of effective field theory (FT) techniques to connect beyond Standard Model ideas and experiment, but also pushed us to think harder about how to interpret data and perform calculations within the FT framework. As a result, progress has been made in at least two aspects: limitations and inconsistencies of conventional FT fits have been recognized, and new knowledge of quantum field theory has been gained. I will discuss one example of each aspect, namely how LHC data are challenging the use of triple gauge coupling parameterization, and how matching from a full theory to an FT can be done without Feynman diagrams.</p>
