New Measurement of the K{sup +}{yields}{pi}{sup +}{nu}{nu} Branching Ratio
Journal Article
·
· Physical Review Letters
- Institute for High Energy Physics, Protvino, Moscow Region, 142 280 (Russian Federation)
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
- Brookhaven National Laboratory, Upton, New York 11973 (United States)
Three events for the decay K{sup +}{yields}{pi}{sup +}{nu}{nu} have been observed in the pion momentum region below the K{sup +}{yields}{pi}{sup +}{pi}{sup 0} peak, 140<P{sub {pi}}<199 MeV/c, with an estimated background of 0.93{+-}0.17(stat.){sub -0.24}{sup +0.32}(syst.) events. Combining this observation with previously reported results yields a branching ratio of B(K{sup +}{yields}{pi}{sup +}{nu}{nu})=(1.73{sub -1.05}{sup +1.15})x10{sup -10} consistent with the standard model prediction.
- OSTI ID:
- 21179886
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 101; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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