Search for the lepton-family-number nonconserving decay \mu -> e + \gamma
M. Ahmed, et al. (MEGA Collaboration)
TL;DR
The MEGA experiment searched for the rare decay + , setting the most stringent upper limit on its branching ratio, thus testing lepton flavor violation.
Contribution
This paper details the design, calibration, and analysis procedures of the MEGA experiment, providing the most restrictive limit on + decay to date.
Findings
Upper limit on + decay branching ratio is < 1.2 x 10^{-11}
The experiment's sensitivity and calibration methods are thoroughly described
No evidence of lepton-flavor-number violation was observed.
Abstract
The MEGA experiment, which searched for the muon- and electron-number violating decay \mu -> e + \gamma, is described. The spectrometer system, the calibrations, the data taking procedures, the data analysis, and the sensitivity of the experiment are discussed. The most stringent upper limit on the branching ratio of \mu -> e + \gamma) < 1.2 x 10^{-11} was obtained.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Computational Physics and Python Applications · Dark Matter and Cosmic Phenomena