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Observation of the baryonic flavor-changing neutral current decay ?b0??µ⁺µ^-

Abstract: We report the first observation of the baryonic flavor-changing neutral current decay ?0b???+?? with 24 signal events and a statistical significance of 5.8 Gaussian standard deviations. This measurement uses a p¯p collisions data sample corresponding to 6.8??fb?1 at ?s=1.96??TeV collected by the CDF II detector at the Tevatron collider. The total and differential branching ratios for ?0b???+?? are measured. We find B(?0b???+??)=[1.73±0.42(stat)±(syst)]×10?6. We also report the first measurement of the differential branching ratio of B0s???+??, using 49 signal events. In addition, we report branching ratios for B+?K+?+??, B0?K0?+??, and B?K?(892)?+?? decays.

Autoría: Aaltonen T., Álvarez González B., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Apresyan A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bauer G., Bedeschi F., Beecher D., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Binkley M.,

Fuente: Physical Review Letters, 2011, 107(20), 201802

Editorial: American Physical Society

Fecha de publicación: 01/11/2011

Nº de páginas: 8

Tipo de publicación: Artículo de Revista

DOI: 10.1103/PhysRevLett.107.201802

ISSN: 0031-9007,1079-7114

Url de la publicación: https://doi.org/10.1103/PhysRevLett.107.201802

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