Accession Number:

AD0614890

Title:

SEARCH FOR THE DECAY MUON(+) TO E(+)+GAMMA,

Descriptive Note:

Corporate Author:

CHICAGO UNIV ILL ENRICO FERMI INST FOR NUCLEAR STUDIES

Report Date:

1963-08-26

Pagination or Media Count:

11.0

Abstract:

A search has been conducted for the decay of muon into egamma using spark chambers, scintillators, and fast oscilloscopes. The number of stopped pions, 7.39X10 to the ninth power and the detection efficiency of the apparatus for muon to electron gamma events, 3.9, would predict the detection of 3 events for a branching ratio of 10 to the minus eighth power. No evidence for the existence of this decay was found. The distribution in range of the e in graphite, and of the e, to the minus eighth power angle for the events found near 180 deg was consistent with that expected from muon to position neutrinotantineotrinogamma. The probability of finding the observed distribution was calculated to be greatest for an assumed muon to electrongamma branching ratio of zero. This probability drops below 50 of this value if the branching ratio is 0.6X10 to the minus eighth power, and below 10 for 2.2X10 to the minus eighth power. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE