Improved upper limit on the decay K{sup +}{yields}{pi}{sup +}{mu}{sup +}e{sup -}

Improved upper limit on the decay K{sup +}{yields}{pi}{sup +}{mu}{sup +}e{sup -}

Based on results of a search for the lepton-family-number-violating decay K{sup +}{yields}{pi}{sup +}{mu}{sup +}e{sup -} with data collected by experiment E865 at the Alternating Gradient Synchrotron of Brookhaven National Laboratory, we place an upper limit on the branching ratio at 2.1x10{sup -11}...

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Veröffentlicht in:Physical review. D, Particles and fields Particles and fields, 2005-07, Vol.72 (1)
Hauptverfasser: Sher, Aleksey, Appel, R., Physics Department, Yale University, New Haven, Connecticut 06511, Atoyan, G.S., Issakov, V.V., Poblaguev, A.A., Bassalleck, B., Eilerts, S., Fischer, H., Lowe, J., Bergman, D.R., Dhawan, S., Do, H., Lozano, J., Majid, W., Zeller, M. E., Cheung, N., Kraus, D.E., Lichard, P., Sher, A., Thompson, J.A.
Format: Artikel
Sprache:eng
Schlagworte:
BRANCHING RATIO
BROOKHAVEN AGS
ELECTRONS
KAONS PLUS
LIMITING VALUES
MUONS PLUS
PARTICLE DECAY
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PIONS PLUS
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Zusammenfassung:Based on results of a search for the lepton-family-number-violating decay K{sup +}{yields}{pi}{sup +}{mu}{sup +}e{sup -} with data collected by experiment E865 at the Alternating Gradient Synchrotron of Brookhaven National Laboratory, we place an upper limit on the branching ratio at 2.1x10{sup -11} (90% C.L.). Combining the results with earlier E865 data and those of a previous experiment, E777, an upper limit on the branching ratio of 1.3x10{sup -11} (90% C.L.) is obtained.
ISSN:0556-2821
1089-4918
DOI:10.1103/PhysRevD.72.012005