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 root s = 1.96 TeV proton-antiproton collisions data set, corresponding to 9.3 fb(-1) of integrated luminosity, we measure A(A(b)(0) -> p pi(-)) = +0.06 +/- 0.07(stat) +/- 0.03(syst) and A(A(b)(0) -> pK(-)) = -0.10 +/- 0.08(stat) +/- 0.04(syst), compatible with no asymmetry. In addition we measure the CP-violating asymmetries in B-s(0) -> K-pi(-) and B-0 -> K+pi(-) decays to be A(B-s(0) -> K-pi(-)) = +0.22 +/- 0.07(stat) +/- 0.02(syst) and A(B-0 -> K+pi(-)) = -0.083 +/- 0.013(stat) +/- 0.004(syst), respectively, which are significantly different from zero and consistent with current world averages.

T., A., S., A., D., A., A., A., A., A., J., A., et al. (2014). Measurements of Direct CP-Violating Asymmetries in Charmless Decays of Bottom Baryons. PHYSICAL REVIEW LETTERS, 113(24) [10.1103/PhysRevLett.113.242001].

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

BARRIA, PATRIZIA;GAROSI, PAOLA;MAESTRO, PAOLO;RUFFINI, FABRIZIO;
2014-01-01

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 root s = 1.96 TeV proton-antiproton collisions data set, corresponding to 9.3 fb(-1) of integrated luminosity, we measure A(A(b)(0) -> p pi(-)) = +0.06 +/- 0.07(stat) +/- 0.03(syst) and A(A(b)(0) -> pK(-)) = -0.10 +/- 0.08(stat) +/- 0.04(syst), compatible with no asymmetry. In addition we measure the CP-violating asymmetries in B-s(0) -> K-pi(-) and B-0 -> K+pi(-) decays to be A(B-s(0) -> K-pi(-)) = +0.22 +/- 0.07(stat) +/- 0.02(syst) and A(B-0 -> K+pi(-)) = -0.083 +/- 0.013(stat) +/- 0.004(syst), respectively, which are significantly different from zero and consistent with current world averages.
2014
T., A., S., A., D., A., A., A., A., A., J., A., et al. (2014). Measurements of Direct CP-Violating Asymmetries in Charmless Decays of Bottom Baryons. PHYSICAL REVIEW LETTERS, 113(24) [10.1103/PhysRevLett.113.242001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/49165
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