Evidence for B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0}, and Measurement of the Branching Fraction and Search for Direct CP Violation in B{sup +}{yields}K{sup 0}{pi}{sup +}
Journal Article
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· Physical Review Letters
- Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
- IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
- Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
- Institute of High Energy Physics, Beijing 100039 (China)
- Institute of Physics, University of Bergen, N-5007 Bergen (Norway); and others
We present evidence for the b{yields}d penguin-dominated decays B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0} in 227x10{sup 6} {upsilon}(4S){yields}BB decays collected with the BABAR detector. We measure the branching fractions B(B{sup +}{yields}K{sup 0}K{sup +})=(1.5{+-}0.5{+-}0.1)x10{sup -6}(<2.4x10{sup -6}) and B(B{sup 0}{yields}K{sup 0}K{sup 0})=(1.19{sub -0.35}{sup +0.40}{+-}0.13)x10{sup -6}, where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B{sup +}{yields}K{sup 0}{pi}{sup +})=(26.0{+-}1.3{+-}1.0)x10{sup -6} and CP-violating charge asymmetry A{sub CP}(K{sup 0}{pi}{sup +})=-0.09{+-}0.05{+-}0.01, where the uncertainties are statistical and systematic, respectively.
- OSTI ID:
- 20699601
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 22 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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