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Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons

Abstract: We report measurements of direct CP?violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1??fb?1 of integrated luminosity, we obtain the first measurements of direct CP violation in bottom strange mesons, ACP(B0s?K??+)=+0.39±0.15(stat)±0.08(syst), and bottom baryons, CP(?0b?p??)=+0.03±0.17(stat)±0.05(syst) and ACP(?0b?pK?)=+0.37±0.17(stat)±0.03(syst). In addition, we measure CP violation in B0?K+?? decays with 3.5? significance, ACP(B0?K+??)=?0.086±0.023(stat)±0.009(syst), in agreement with the current world average. Measurements of branching fractions of B0s?K+K? and B0??+?? decays are also updated.

Other publications of the same journal or congress with authors from the University of Cantabria

Authorship: 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, 106(18), 181802

Publisher: American Physical Society

Publication date: 01/05/2011

No. of pages: 8

Publication type: Article

DOI: 10.1103/PhysRevLett.106.181802

ISSN: 0031-9007,1079-7114

Publication Url: https://doi.org/10.1103/PhysRevLett.106.181802

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