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Measurement of polarization and search for CP violation in B s0?ff decays

Abstract: We present the first measurement of polarization and CP-violating asymmetries in a B0s decay into two light vector mesons, B0s???, and an improved determination of its branching ratio using 295 decays reconstructed in a data sample corresponding to 2.9??fb?1 of integrated luminosity collected by the CDF experiment at the Fermilab Tevatron collider. The fraction of longitudinal polarization is determined to be fL=0.348±0.041(stat)±0.021(syst), and the branching ratio B(B0s???)=[2.32±0.18(stat)±0.82(syst)]×10?5. Asymmetries of decay angle distributions sensitive to CP violation are measured to be Au=?0.007±0.064(stat)±0.018(syst) and Av=?0.120±0.064(stat)±0.016(syst).

 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(26), 261802

 Editorial: American Physical Society

 Fecha de publicación: 01/12/2011

 Nº de páginas: 8

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.107.261802

 ISSN: 0031-9007,1079-7114

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.107.261802

Autoría

AALTONEN, T.

BARBARA ALVAREZ GONZALEZ

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON