Theory Seminar (High Energy/Cosmology) |
Events During the Week of October 24th through October 31st, 2021
Monday, October 25th, 2021
- No events scheduled
Tuesday, October 26th, 2021
- Muon g-2 Experiments as Dark Matter Detectors
- Time: 4:00 pm - 5:00 pm
- Place: Chamberlin 5280
- Speaker: Ryan Janish, Fermilab
- Abstract: We propose extending the search for dark matter (DM) by using muon spin targets. An ultralight DM background may apply an oscillating torque to muon spins, resulting in novel precession trajectories. A time-resolved reanalysis of muon precession data from the ongoing Fermilab g-2 experiment and from future g-2 and EDM measurements is sensitive to this signal. We place constraints on DM-muon interactions using existing data, and outline the detection reach of a dedicated re-analysis. In addition, some DM candidates alter precession primarily through a shifted precession frequency, i.e. they provide an apparent contribution to the muon magnetic dipole moment which depends on the local DM density. We find that the current muon g-2 anomaly can be explained by pseudoscalar DM which induces an oscillating electric dipole moment for the muon. This explanation may be verified with a time-resolved analysis. Note: This is a hybrid event. A zoom link will be distributed via the seminar mailing list. To join, email the organizer.
- Host: Lars Aalsma
Wednesday, October 27th, 2021
- No events scheduled
Thursday, October 28th, 2021
- No events scheduled
Friday, October 29th, 2021
- No events scheduled