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(Λ0b→pπ−)=+0.06±0.07(stat)±0.03(syst) and A(Λ0b→pK−)=−0.10±0.08(stat)±0.04(syst), compatible with no asymmetry. In addition we measure the CP-violating asymmetries in B0s→K−π+ and B0→K+π− decays to be A(B0s→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.
Measurements of Direct CP -Violating Asymmetries in Charmless Decays of Bottom Baryons.
PAGLIARONE, Carmine Elvezio;
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 s√=1.96 TeV proton-antiproton collisions data set, corresponding to 9.3 fb−1 of integrated luminosity, we measure A(Λ0b→pπ−)=+0.06±0.07(stat)±0.03(syst) and A(Λ0b→pK−)=−0.10±0.08(stat)±0.04(syst), compatible with no asymmetry. In addition we measure the CP-violating asymmetries in B0s→K−π+ and B0→K+π− decays to be A(B0s→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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
