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Título: | Measurement of B -> K-*(892)gamma Branching Fractions and CP and Isospin Asymmetries |
Autor: | Babar Collaboration; Azzolini, Virginia; López-March, Neus CSIC; Martínez-Vidal, Fernando CSIC ORCID; Milanés, Diego A. CSIC ORCID; Oyanguren, Arantza CSIC ORCID; Aubert, B. | Fecha de publicación: | 20-nov-2009 | Editor: | American Physical Society | Citación: | Physical Review Letters 103 (21): 211802 (2009) | Resumen: | We present an analysis of the decays B0 -> K*0 gamma and B+ -> K*+ gamma using a sample of 383 million BBbar events collected with the BaBar detector at the PEP2 asymmetric energy B factory. We measure the branching fractions BF[B0 -> K*0 Gamma] = 4.47 +/- 0.10 +/- 0.16 x 10^-5 and BF[B+ -> K*+ Gamma] = 4.22 +/- 0.14 +/- 0.16 x 10^-5. We constrain the direct CP asymmetry to be -0.033 < Acp < 0.028 and the isopin asymmetry to be 0.017 < \Delta0- < 0.116, where the limits are determined at the 90% confidence interval and include both statistical systematic uncertainties. | Versión del editor: | http://dx.doi.org/ 10.1103/PhysRevLett.103.211802 | URI: | http://hdl.handle.net/10261/21886 | DOI: | 10.1103/PhysRevLett.103.211802 | ISSN: | 0031-9007 |
Aparece en las colecciones: | (IFIC) Artículos |
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measurement of B.pdf | 237,96 kB | Adobe PDF | Visualizar/Abrir |
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