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Appel, J A; Asaadi, J; Aurisano, A; Barnes, V E; Bauce, M; Bedeschi, F; Benjamin, D; Bocci, A; Bromberg, C; Bussey, P; Carlsmith, D; Casal, B; Casarsa, M; Cauz, D; Chokheli, D; Cox, C A; de Barbaro, P; D'Onofrio, M; Esham, B; Field, R; Flanagan, G; Forrest, R; Franklin, M; Frisch, H; Garfinkel, A F; Gerchtein, E; Giakoumopoulou, V; Giokaris, N; Giurgiu, G; Glagolev, V; Glenzinski, D; Gold, M; Gomez-Ceballos, G; Grosso-Pilcher, C; Hahn, S R; Happacher, F; Hara, K; Hocker, A; Hussein, M; Iori, M; Jayatilaka, B; Joo, K K; Kambeitz, M; Kamon, T; Ketchum, W; Kim, Y J; Kruse, M; Kuhr, T; Limosani, A; Lueck, J; Lysak, R; Madrak, R; Malik, S; Manca, G; Martínez, M; Mehtala, P; Miao, T; Miyake, H; Moed, S; Moggi, N; Morello, M J; Mukherjee, A; Murat, P; Nett, J; Norniella, O; Oh, Y D; Okusawa, T; Orava, R; Pagliarone, C; Palni, P; Pilot, J; Pitts, K; Roser, R; Sakurai, Y; Scodellaro, L; Seidel, S; Shears, T; Shepard, P F; Sliwa, K; Song, H; Sorin, V; Sudo, Y; Sukhanov, A; Takeuchi, Y; Tang, J; Thomson, E; Torretta, D; Totaro, P; Velev, G; Whiteson, D; Wilbur, S; Wittich, P; Wolbers, S; Wolfe, H; Wright, T; Yang, T; Yao, W-M; Yoh, J; Yu, I; Zhou, C
Physical review letters, 2014-Dec-12, Letnik: 113, Številka: 24Journal Article
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.
