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Measurements of Direct CP-Violating Asymmetries in Charmless Decays of Bottom Baryons

Abstract: We report final 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 the complete vs=1.96??TeV proton-antiproton collisions data set, corresponding to 9.3??fb-1 of integrated luminosity, we measure A(?0b?pp-)=+0.06±0.07(stat)±0.03(syst) and A(?0b?pK-)=-0.10±0.08(stat)±0.04(syst), compatible with no asymmetry. In addition we measure the CP-violating asymmetries in B0s?K-p+ and B0?K+p- decays to be A(B0s?K-p+)=+0.22±0.07(stat)±0.02(syst) and A(B0?K+p-)=-0.083±0.013(stat)±0.004(syst), respectively, which are significantly different from zero and consistent with current world averages.

 Fuente: Phys. Rev. Lett. Vol. 113, Num. 24, Pag. 242001 (2014)

 Editorial: American Physical Society

 Fecha de publicación: 01/12/2014

 Nº de páginas: 8

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.113.242001

 ISSN: 0031-9007,1079-7114

 Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.113.242001

Autoría

AALTONEN, TIMO ANTERO

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON