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 P(B¯0→B0) and P(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.

Study of CP asymmetry in B0- B ¯ 0 mixing with inclusive dilepton events

BIANCHI, Fabrizio;DE MORI, FRANCESCA;GAMBA, Diego;
2015-01-01

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 P(B¯0→B0) and P(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
114
8
081801-1
081801-8
http://harvest.aps.org/bagit/articles/10.1103/PhysRevLett.114.081801/apsxml
Physics and Astronomy (all)
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.; Lynch, ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1570566
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