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

Journal Article · Fri Jul 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.012005· OSTI ID:20711032

Sher, Aleksey ^[1]; Appel, R ^[2]; Atoyan, G S; Issakov, V V; Poblaguev, A A ^[3]; Bassalleck, B; Eilerts, S; Fischer, H; Lowe, J ^[4]; Bergman, D R; Dhawan, S; Do, H; Lozano, J; Majid, W; Zeller, M E ^[5]; Cheung, N; Kraus, D E; Lichard, P; Sher, A; Thompson, J A ^[6]

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1. Physik-Institut, Universitaet Zuerich, CH-8057 Zurich (Switzerland)
2. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)
3. Institute for Nuclear Research of Russian Academy of Sciences, Moscow 117 312 (Russian Federation)
4. Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
5. Physics Department, Yale University, New Haven, Connecticut 06511 (United States)
6. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States); and others

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.

• OSTI ID: 20711032
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
BROOKHAVEN AGS
ELECTRONS
KAONS PLUS
LIMITING VALUES
MUONS PLUS
PARTICLE DECAY
PIONS PLUS