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Measurements of branching fraction ratios and CP-asymmetries in suppressed B-?D(?K+p-)K- and B-?D(?K+p-)p- decays

Abstract: We report the first reconstruction in hadron collisions of the suppressed decays B??D(?K+??)K? and B??D(?K+??)??, sensitive to the Cabibbo-Kobayashi-Maskawa phase ?, using data from 7??fb?1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B??D(?K+??)K? suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K)=[22.0±8.6(stat)±2.6(syst)]×10?3, R+(K)=[42.6±13.7(stat)±2.8(syst)]×10?3, R?(K)=[3.8±10.3(stat)±2.7(syst)]×10?3 as well as the direct CP-violating asymmetry A(K)=?0.82±0.44(stat)±0.09(syst) of this mode. Corresponding quantities for B??D(?K+??)?? decay are also reported.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 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 D - Particles, Fields, Gravitation and Cosmology, 2011, 84(9), 091504(R)

Editorial: American Physical Society

 Fecha de publicación: 01/11/2011

Nº de páginas: 8

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.84.091504

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Url de la publicación: https://doi.org/10.1103/PhysRevD.84.091504

Autoría

AALTONEN, T.

BARBARA ALVAREZ GONZALEZ

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON