High Energy Phenomenology Seminar: Felix Kahlhoefer "Axion-like particles: New physics below the GeV scale?"
Speaker: |
(sign-up)
Felix Kahlhoefer |
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Date: | 12/4/2020 |
Time: | 12 p.m. |
Location: | Via ZOOM |
Event Contact: | Brandy Shier BSHIER@ILLINOIS.EDU |
Sponsor: | Department of Physics |
Event Type: | Seminar/Symposium |
Many extensions of the Standard Model feature spontaneously broken new symmetries that give rise to bosonic particles with naturally small masses and couplings. These so-called axion-like particles (ALPs) can constitute some or all of dark matter or mediate the interactions between dark and visible matter. In my talk I will review the various ways in which ALPs can couple to Standard Model particles and discuss the resulting phenomenology. A particular focus will be on MeV-scale ALPs, which can be explored with a wide range of particle physics experiments, such as precision measurements of rare meson decays, electron-positron colliders, and fixed-target experiments. I will also present astrophysical constraints, in particular from supernovae, and possible hints for keV-scale ALPs from the XENON1T experiment. |