Search for the rare decay. mu. /sup +/. -->. e/sup +/. gamma gamma

Journal Article · Mon Dec 29 04:00:00 EST 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.57.3241· OSTI ID:6732528

Grosnick, D; Wright, S C; Bolton, R D; Cooper, M D; Frank, J S; Hallin, A L; Heusi, P A; Hoffman, C M; Hogan, G E; Mariam, F G; others, and

A new experimental search with the Crystal Box detector shows no evidence for the lepton-family-number--nonconserving decay ..mu../sup +/..-->..e/sup +/..gamma gamma... This corresponds to an upper limit for the branching ratio of GAMMA(..mu -->..e..gamma gamma..)/GAMMA(..mu -->..e..nu..nu-bar)<7.2 x 10/sup -1/ (90% confidence level), an improvement of more than 2 orders of magnitude in sensitivity.

• Research Organization: University of Chicago, Chicago, Illinois 60637
• OSTI ID: 6732528
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:26; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Electromagnetic Interactions &amp; Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BRANCHING RATIO
CONSERVATION LAWS
ELEMENTARY PARTICLES
FERMIONS
LEPTON NUMBER
LEPTONS
LIMITING VALUES
MAXIMUM-LIKELIHOOD FIT
MUONS
MUONS PLUS
NUMERICAL SOLUTION
POSITRONS
RADIATIVE DECAY