Aaltonen, T;
Amerio, S;
Amidei, D;
Anastassov, A;
Annovi, A;
Antos, J;
Apollinari, G;
... CDF Collaboration; + view all
(2014)
Measurements of direct CP-violating asymmetries in charmless decays of bottom baryons.
Physical Review Letters
, 113
(24)
, Article 242001. 10.1103/PhysRevLett.113.242001.
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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 √s=1.96 TeV proton-antiproton collisions data set, corresponding to 9.3 fb⁻¹ of integrated luminosity, we measure A(Λ(b)⁰→pπ⁻)=+0.06±0.07(stat)±0.03(syst) and A(Λ(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⁻π⁺ and B⁰→K⁺π⁻ decays to be A(B(s)⁰→K⁻π⁺)=+0.22±0.07(stat)±0.02(syst) and A(B⁰→K⁺π⁻)=-0.083±0.013(stat)±0.004(syst), respectively, which are significantly different from zero and consistent with current world averages.
| Type: | Article |
|---|---|
| Title: | Measurements of direct CP-violating asymmetries in charmless decays of bottom baryons |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.113.242001 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.113.242001 |
| Language: | English |
| Additional information: | Copyright © 2014 American Physical Society. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1427264 |
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