Search for the lepton flavor violating decay μ + → e + e - e + with the Mu3e experiment at PSI

Mu3e is an experiment under construction at the Paul Scherrer Institute (Switzerland) aiming to find or exclude the charged lepton flavor violating decay μ + → e + e - e + at branching fractions above 10 -16 . A first running phase using an existing beamline targets a single event sensitivity of 2 ·...

Full description

Saved in:
Bibliographic Details
Published in:Journal of instrumentation 2023-08, Vol.18 (8), p.C08004
Main Author: Martín Pérez, C.
Format: Article
Language:English
Subjects:
Active pixel sensors
Decay
Flavor (particle physics)
Front-end electronics for detector readout
Kinematics
Leptons
Muons
Online farms and online filtering
Particle tracking detectors
Positrons
Scintillating fibers
Sensitivity
Timing detectors
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Mu3e is an experiment under construction at the Paul Scherrer Institute (Switzerland) aiming to find or exclude the charged lepton flavor violating decay μ + → e + e - e + at branching fractions above 10 -16 . A first running phase using an existing beamline targets a single event sensitivity of 2 · 10 -15 , while the ultimate sensitivity is reached in a second phase with a new high intensity muon beamline. Achieving such sensitivity requires a high muon rate along with a detector of large kinematic acceptance able to reconstruct the low momenta of the decay positrons and electrons with minimal material budget. The Mu3e experiment is mounted with ultra thin tracking detectors based on high-voltage monolithic active pixel sensors, combined with scintillating fibers and tiles for precise timing. This paper presents an overview of the experimental requirements, the technical design, and the construction readiness of Mu3e.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/18/08/C08004