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

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URI: http://hdl.handle.net/10902/13893
ISSN: 0031-9007
ISSN: 1079-7114
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Autoría
Aaltonen, Timo Antero; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, GervasioAutoridad Unican; Palencia Cortezón, José Enrique; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican
Fecha
2014-12
Derechos
© 2014 American Physical Society
Publicado en
Phys. Rev. Lett. Vol. 113, Num. 24, Pag. 242001 (2014)
Editorial
American Physical Society
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Resumen/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.
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