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High Energy Phenomenology Seminar: Felix Kahlhoefer "Axion-like particles: New physics below the GeV scale?"

Event Type
Seminar/Symposium
Sponsor
Department of Physics
Virtual
wifi event
Date
Dec 4, 2020   12:00 pm  
Speaker
Felix Kahlhoefer
Contact
Brandy Shier
E-Mail
BSHIER@ILLINOIS.EDU
Views
9
Originating Calendar
Physics - High Energy Physics Seminar

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.

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