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EnglishUsing events in which one of two neutral B mesons from the decay of an Y(4S) meson is fully reconstructed, we determine parameters governing decay (DeltaGamma(d)/Gamma(d)), CP, and T violation (\q/p\), and CP and CPT violation (Re z, Im z). The results, obtained from an analysis of 88x10(6) Y(4S) decays recorded by BABAR, are sgn(Re lambda(CP))DeltaGamma(d)/Gamma(d)=-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 lambda(CP)/'lambda(CP)') 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.
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http://hdl.handle.net/11392/1211529| Titolo: | Limits on the decay-rate difference of neutral B mesons and on CP, T, and CPT violation in B-0(B)over-bar(0) oscillations |
| Autori interni: | ANDREOTTI, Mirco AZZOLINI, Virginia CALABRESE, Roberto CIBINETTO, Gianluigi LUPPI, Eleonora NEGRINI, Matteo SARTI, Alessio |
| Data di pubblicazione: | 2004 |
| Rivista: | PHYSICAL REVIEW LETTERS |
| Abstract: | Using events in which one of two neutral B mesons from the decay of an Y(4S) meson is fully reconstructed, we determine parameters governing decay (DeltaGamma(d)/Gamma(d)), CP, and T violation (\q/p\), and CP and CPT violation (Re z, Im z). The results, obtained from an analysis of 88x10(6) Y(4S) decays recorded by BABAR, are sgn(Re lambda(CP))DeltaGamma(d)/Gamma(d)=-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 lambda(CP)/'lambda(CP)') 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. |
| Handle: | http://hdl.handle.net/11392/1211529 |
| Appare nelle tipologie: | 03.1 Articolo su rivista |
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