We present evidence for the b -> d penguin-dominated decays B+->(K) over bar K-0(+) and B-0-> K-0(K) over bar (0) in 227x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector. We measure the branching fractions B(B+->(K) over bar K-0(+))=(1.5 +/- 0.5 +/- 0.1)x10(-6)(< 2.4x10(-6)) and B(B-0-> K-0(K) over bar (0))=(1.19(-0.35)(+0.40)+/- 0.13)x10(-6), where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B+-> K(0)pi(+))=(26.0 +/- 1.3 +/- 1.0)x10(-6) and CP-violating charge asymmetry A(CP)(K(0)pi(+))=-0.09 +/- 0.05 +/- 0.01, where the uncertainties are statistical and systematic, respectively.

Evidence for B+->(K)over-bar(0)K(+) and B-0 -> K-0(K)over-bar(0), and measurement of the branching fraction and search for direct CP violation in B+-> K-0 pi(+) / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.p., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 95:(2005). [10.1103/physrevlett.95.221801]

Evidence for B+->(K)over-bar(0)K(+) and B-0 -> K-0(K)over-bar(0), and measurement of the branching fraction and search for direct CP violation in B+-> K-0 pi(+)

DEL RE, Daniele;RAHATLOU, SHAHRAM;BELLINI, Fabio;CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;VOENA C;
2005

Abstract

We present evidence for the b -> d penguin-dominated decays B+->(K) over bar K-0(+) and B-0-> K-0(K) over bar (0) in 227x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector. We measure the branching fractions B(B+->(K) over bar K-0(+))=(1.5 +/- 0.5 +/- 0.1)x10(-6)(< 2.4x10(-6)) and B(B-0-> K-0(K) over bar (0))=(1.19(-0.35)(+0.40)+/- 0.13)x10(-6), where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B+-> K(0)pi(+))=(26.0 +/- 1.3 +/- 1.0)x10(-6) and CP-violating charge asymmetry A(CP)(K(0)pi(+))=-0.09 +/- 0.05 +/- 0.01, where the uncertainties are statistical and systematic, respectively.
2005
01 Pubblicazione su rivista::01a Articolo in rivista
Evidence for B+->(K)over-bar(0)K(+) and B-0 -> K-0(K)over-bar(0), and measurement of the branching fraction and search for direct CP violation in B+-> K-0 pi(+) / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.p., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 95:(2005). [10.1103/physrevlett.95.221801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/231915
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