Sophie Middleton (Caltech)

Mu2e: The Muon-to-Electron Conversion Experiment at Fermilab

Abstract: The Mu2e Experiment, based at Fermilab, will search for the coherent, neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus. Such a process would exhibit Charged Lepton Flavor Violation (CLFV). Observation of CLFV would be an unambiguous signal of physics beyond the Standard Model (BSM). Mu2e aims to improve the previous upper limit by four orders of magnitude, and reach an unprecedented single-event-sensitivity of 3 × 10−17 on the conversion rate, a 90% CL of 8×10−17, and a 5σ discovery reach at 2×10−16. Mu2e is sensitive to a wide range of BSM models and will indirectly probe mass scales up to 104 TeV/c2. To achieve its design goal, Mu2e will utilize an integrated system of solenoids to create the most intense muon beam in the world. The background will be well-understood and kept at a sub-event level. Mu2e will be an indispensable piece of the global search for BSM over the next decade. The experiment is approaching a very important and exciting stage in its life-cycle. Construction is is well underway. Many components have already been procured, delivered and fully tested. Operations are scheduled to begin in the upcoming years. This talk will explore the physics motivations, design, and current status of the Mu2e Experiment.