A search for a muon to electron conversion in COMET

TL;DR

The COMET experiment at J-PARC aims to detect muon to electron conversion with unprecedented sensitivity, presenting preliminary beam results and outlining future phases to improve detection capabilities.

Contribution

This paper reports the initial results from COMET Phase-alpha and updates on the experimental setup and goals for the upcoming phases, advancing the search for charged lepton flavor violation.

Findings

Successful transport of muons through the curved solenoid

Preliminary results from Phase-alpha beam measurements

Progress towards higher sensitivity in muon to electron conversion search

Abstract

The COMET experiment at J-PARC, Japan, aims to search for muon to electron conversion with aluminium nuclei, achieving a sensitivity four orders of magnitude higher than the current upper limit at a 90% confidence level. The proton beam line has recently been completed, and muons have been successfully transported through the curved solenoid in the Phase-alpha of the experiment. In this paper, we will present preliminary results from the Phase-alpha beam measurement, the status of the intermediate sensitivity experiment (COMET Phase-I), and the ultimate goal of COMET Phase-II.