Using events in which one of two neutral B mesons from the decay of an Υ(4S) meson is fully reconstructed, we determine parameters governing decay (ΔΓd/Γd), CP, and T violation (|q/p|), and CP and CPT violation (Re z,Im z). The results, obtained from an analysis of 88×10^6 Υ(4S) decays recorded by BABAR, are sgn(Re λCP)ΔΓd/Γd=-0.008±0.037(stat)±0.018(syst)[-0.084,0.068],|q/p|= 1.029±0.013(stat)±0.011(syst)[1.001,1.057],(Re λCP/|λCP|) Re z=0.014±0.035(stat)±0.034(syst) [-0.072,0.101],Im z=0.038±0.029(stat)±0.025(syst)[-0.028,0.104]. The values inside the square brackets indicate the 90% confidence-level intervals. These results are consistent with standard model expectations.
Limits on the Decay-Rate Difference of Neutral B Mesons and on CP, T, and CPT Violation in B0B̅ 0 Oscillations
MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;SIMI, GABRIELE;
2004
Abstract
Using events in which one of two neutral B mesons from the decay of an Υ(4S) meson is fully reconstructed, we determine parameters governing decay (ΔΓd/Γd), CP, and T violation (|q/p|), and CP and CPT violation (Re z,Im z). The results, obtained from an analysis of 88×10^6 Υ(4S) decays recorded by BABAR, are sgn(Re λCP)ΔΓd/Γd=-0.008±0.037(stat)±0.018(syst)[-0.084,0.068],|q/p|= 1.029±0.013(stat)±0.011(syst)[1.001,1.057],(Re λCP/|λCP|) Re z=0.014±0.035(stat)±0.034(syst) [-0.072,0.101],Im z=0.038±0.029(stat)±0.025(syst)[-0.028,0.104]. The values inside the square brackets indicate the 90% confidence-level intervals. These results are consistent with standard model expectations.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
