Flavor violating axions

by Jure Zupan (University of Cincinnati)

Friday 12 Feb 2021, 12:30 → 14:00 Europe/London

https://zoom.us/j/304578256

Axion models with generation-dependent Peccei-Quinn charges can lead to flavor-changing neutral currents, thus motivating QCD axion searches at precision flavor experiments. I will cover the constraints on both quark flavor violating decays into axions as well as leptonic ones, both at precision laboratory experiments as well as in astrophysics. I will present a proposal for a new experimental setup for MEG II, the MEGII-fwd, with a forward calorimeter placed downstream from the muon stopping target.  I will discuss the implications of these searches for representative LFV ALP models, where the presence of a light ALP is motivated by neutrino masses, the strong CP problem and/or the SM flavor puzzle.

Connections will begin at 12:30 with the seminar beginning at 13:00.

Manchester_2021_Zupan.pdf