Searches for muon-electron and muon-positron conversion in titanium

Journal Article · Mon Aug 31 04:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.970· OSTI ID:6360320

Ahmad, S; Azuelos, G; Blecher, M; Bryman, D; Burnham, R A; Clifford, E T.H.; Depommier, P; Dixit, M S; Gotow, K; Hargrove, C K; others, and

Searches have been performed for neutrinoless muon-electron conversion and muon-positron conversion using a time projection chamber. An upper limit on the branching ratio for the coherent reaction R(..mu../sup -/ +Ti..-->..e/sup -/+Ti)<4.6 x 1 0/sup -12/ (90% confidence level (C.L.)) relative to ordinary muon capture was obtained. For the process ..mu../sup -/+Ti..-->..e/sup +/+Ca no events were observed for positron momenta p>96 MeV/c leading to an upper limit on the partial branching ratio relative to ordinary muon capture GAMMA/sub p//sub >//sub 96/(..mu../sup -/+Ti..-->..e/sup +/ +Ca)/GAMMA(..mu../sup -/+Ti..-->..capture) <9 x 10/sup -12/ (90% C.L.). With the assumption of a giant-resonance-excitation model the integrated limit would be GAMMA(..mu../sup -/+Ti..-->..e/sup +/+Ca)/GAMMA(..mu../sup -/ +Ti..-->..capture)<1.7 x 10/sup -10/ (90% C.L.).

• Research Organization: TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6Tchemically bond2A3, Canada
• OSTI ID: 6360320
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:9; ISSN PRLTA
• Country of Publication: United States
• Language: English

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