We present the first observation of the decay B+->rho K-+(0), using a data sample of 348 fb(-1) collected at the Upsilon(4S) resonance with the BABAR detector. The branching fraction and charge asymmetry are measured to be (8.0(-1.3)(+1.4)+/- 0.6)x10(-6) and (-12.2 +/- 16.6 +/- 2.0)%, respectively, where the first uncertainty is statistical and the second is systematic. The charge asymmetry is defined by A(ch)=(Gamma(-)(B)-Gamma(+)(B))/(Gamma(-)(B)+Gamma(+)(B)) with Gamma(+/-)(B) the B-+/- decay rate. The significance of the observed branching fraction, including systematic uncertainties, is 7.9 standard deviations.

Observation of B+->rho K-+(0) and measurement of its branching fraction and charge asymmetry / Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J.p., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Tico, J.g., Grauges, E., Lopez, L., Palano, A., Eigen, G., Stugu, B., Sun, L., Abrams, G.s., Battaglia, M., Brown, D.n., BUTTON SHAFER, J., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 76:(2007). [10.1103/physrevd.76.011103]

Observation of B+->rho K-+(0) and measurement of its branching fraction and charge asymmetry

RAHATLOU, SHAHRAM;BELLINI, Fabio;CAVOTO, Gianluca;DEL RE, Daniele;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;VOENA C;
2007

Abstract

We present the first observation of the decay B+->rho K-+(0), using a data sample of 348 fb(-1) collected at the Upsilon(4S) resonance with the BABAR detector. The branching fraction and charge asymmetry are measured to be (8.0(-1.3)(+1.4)+/- 0.6)x10(-6) and (-12.2 +/- 16.6 +/- 2.0)%, respectively, where the first uncertainty is statistical and the second is systematic. The charge asymmetry is defined by A(ch)=(Gamma(-)(B)-Gamma(+)(B))/(Gamma(-)(B)+Gamma(+)(B)) with Gamma(+/-)(B) the B-+/- decay rate. The significance of the observed branching fraction, including systematic uncertainties, is 7.9 standard deviations.
2007
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of B+->rho K-+(0) and measurement of its branching fraction and charge asymmetry / Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J.p., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Tico, J.g., Grauges, E., Lopez, L., Palano, A., Eigen, G., Stugu, B., Sun, L., Abrams, G.s., Battaglia, M., Brown, D.n., BUTTON SHAFER, J., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 76:(2007). [10.1103/physrevd.76.011103]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/231060
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