Experimental Limiting Factors for the Search of μ→eγ at Future Facilities

Abstract

The search for the Lepton Flavor Violating decay μ → e γ exploits the most intense continuous muon beams, which can currently deliver ∼ 10 8 muons per second. In the next decade, accelerator upgrades are expected in various facilities, making it feasible to have continuous beams with an intensity of 10 9 or even 10 10 muons per second. We investigate the experimental limiting factors that will define the ultimate performances, and hence the sensitivity, in the search for μ → e γ with a continuous beam at these extremely high rates. We then consider some conceptual detector designs and evaluate the corresponding sensitivity as a function of the beam intensity.

Keywords

• lepton flavor violation
• physics beyond the standard model
• muon decays
• intensity frontier