Oct 2020 - Sept 2021

Internal Seminar by Dorian Amaral



Exploring the $U(1)_{L_\mu - L_\tau}$ Solution to the Muon's Anomalous Magnetic Moment Using Future Experimental Probes


The first results from the Muon $g-2$ experiment at Fermilab have strengthened hints of exciting new physics in the leptonic sector. Among the different models that can account for this anomaly, the addition of a $U(1)_{L_\mu - L_\tau}$ gauge symmetry to the SM is a particularly elegant explanation, introducing a so-called hidden photon, but not requiring any additional fermionic content. Driven by its simplicity, we outline a strategy for exploring the $(g-2)_\mu$ solution of the $U(1)_{L_\mu - L_\tau}$ parameter space using future experimental probes. In particular, we focus on the muon fixed-target experiment NA64$\mu$, experiments measuring coherent elastic neutrino-nucleus scattering at spallation sources, and multi-ton liquid xenon dark matter direct detection experiments. We find that each of these experiments can bring a unique piece of the puzzle to this search, allowing us to exploit their complementarity in a combined analysis and to pin down the nature of the $U(1)$ model.

(Based on ArXiv:2104.03297)


Zoom link:  IPPP Seminars (Friday at 2 pm UK time)


Meeting ID: 994 2012 4988