Muon to electron conversion search in the presence of Al nuclei at the Fermilab Mu2e experiment: Motivation, Design and Progress

Abstract

The Mu2e experiment aims to find charged lepton flavor violation(CLFV) by measuring the monochromatic electrons from μ−N → e−N conversion with an unprecedented single event sensitivity of 3 × 10−17. When completed, the experiment will improve the current limit by four orders of magnitude and make a previously unexplored phase space available for the search for beyond the standard model physics. Physics motivation for the experiment is discussed and design choices for the detectors and various sub systems are explained in this document. The construction of the Mu2e experiment is well underway and commissioning will begin in late 2022 with first data taking in late 2025 and 4-5 years of data taking thereafter to reach our goal.