We present a measurement of the asymmetry ACP between same-sign inclusive dilepton samples ℓ+ℓ+ and ℓ−ℓ− (ℓ=e, μ) from semileptonic B decays in ϒ(4S)→BB¯ events, using the complete data set recorded by the BABAR experiment near the ϒ(4S) resonance, corresponding to 471×106 BB¯ pairs. The asymmetry ACP allows comparison between the mixing probabilities (B¯0→B0) and (B0→B¯0), and therefore probes CP and T violation. The result, ACP=[−3.9±3.5(stat)±1.9(syst)]×10−3, is consistent with the standard model expectation.

Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2015). Study of CP Asymmetry in B-0-(B)over-bar(0) Mixing with Inclusive Dilepton Events. PHYSICAL REVIEW LETTERS, 114(8), 1-8 [10.1103/PhysRevLett.114.081801].

Study of CP Asymmetry in B-0-(B)over-bar(0) Mixing with Inclusive Dilepton Events

PATRIGNANI, CLAUDIA;
2015

Abstract

We present a measurement of the asymmetry ACP between same-sign inclusive dilepton samples ℓ+ℓ+ and ℓ−ℓ− (ℓ=e, μ) from semileptonic B decays in ϒ(4S)→BB¯ events, using the complete data set recorded by the BABAR experiment near the ϒ(4S) resonance, corresponding to 471×106 BB¯ pairs. The asymmetry ACP allows comparison between the mixing probabilities (B¯0→B0) and (B0→B¯0), and therefore probes CP and T violation. The result, ACP=[−3.9±3.5(stat)±1.9(syst)]×10−3, is consistent with the standard model expectation.
2015
Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2015). Study of CP Asymmetry in B-0-(B)over-bar(0) Mixing with Inclusive Dilepton Events. PHYSICAL REVIEW LETTERS, 114(8), 1-8 [10.1103/PhysRevLett.114.081801].
Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lee, M. J.; Ly...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/534661
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