We present evidence for the bâ†d penguin-dominated decays B+â†KÂ0K+ and B0â†K0KÂ0 in 227Ã-106 Î¥(4S)â†'BBÂdecays collected with the BABAR detector. We measure the branching fractions B(B+â†'KÂ0K+)= (1.5±0.5±0.1)Ã-10-6(<2.4Ã-10-6) and B(B0â†'K0KÂ0)=(1.19-0.35+0.40±0.13) Ã-10-6, where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B+â†'K0Ï€+)=(26.0±1. 3±1.0)Ã-10-6 and CP-violating charge asymmetry ACP(K0Ï€+)=-0.09±0.05±0.01, where the uncertainties are statistical and systematic, respectively. © 2005 The American Physical Society.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Evidence for B+â†'KÂ0K+ and B0â†'K0K 0, and measurement of the branching fraction and search for direct CP violation in B+â†'K0Ï€+. PHYSICAL REVIEW LETTERS, 95(22), 1-7 [10.1103/PhysRevLett.95.221801].

Evidence for B+â†'KÂ0K+ and B0â†'K0K 0, and measurement of the branching fraction and search for direct CP violation in B+â†'K0Ï€+

PATRIGNANI, CLAUDIA;
2005

Abstract

We present evidence for the bâ†d penguin-dominated decays B+â†KÂ0K+ and B0â†K0KÂ0 in 227Ã-106 Î¥(4S)â†'BBÂdecays collected with the BABAR detector. We measure the branching fractions B(B+â†'KÂ0K+)= (1.5±0.5±0.1)Ã-10-6(<2.4Ã-10-6) and B(B0â†'K0KÂ0)=(1.19-0.35+0.40±0.13) Ã-10-6, where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B+â†'K0Ï€+)=(26.0±1. 3±1.0)Ã-10-6 and CP-violating charge asymmetry ACP(K0Ï€+)=-0.09±0.05±0.01, where the uncertainties are statistical and systematic, respectively. © 2005 The American Physical Society.
2005
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2005). Evidence for B+â†'KÂ0K+ and B0â†'K0K 0, and measurement of the branching fraction and search for direct CP violation in B+â†'K0Ï€+. PHYSICAL REVIEW LETTERS, 95(22), 1-7 [10.1103/PhysRevLett.95.221801].
Aubert, B; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Pappag...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/551913
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