Study of CP Asymmetry in B⁰−B̅⁰ Mixing with Inclusive Dilepton Events

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Study of CP Asymmetry in B⁰−B̅⁰ Mixing with Inclusive Dilepton Events

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Title: Study of CP Asymmetry in B⁰−B̅⁰ Mixing with Inclusive Dilepton Events
Author(s):
Lees, J. P.;
Poireau, V.;
Tisserand, V.;
Grauges, E.;
Palano, A.;
Eigen, G.;
Stugu, B.;
Izen, Joseph M.;
Lou, Xinchou;
BaBar Collaboration
Format: Text
Item Type: Article
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Abstract: We present a measurement of the asymmetry A(CP) between same- sign inclusive dilepton samples ℓ⁺ℓ⁺ and ℓ⁻ℓ⁻ (ℓ = e, μ) from semileptonic B decays in ϒ(4S) → BB̅ events, using the complete data set recorded by the BABAR experiment near the ϒ(4S) resonance, corresponding to 471 x 10⁶ BB̅ pairs. The asymmetry A(CP) allows comparison between the mixing probabilities P((B̅⁰ → B⁰) and P(B⁰ → B̅⁰)) and therefore probes CP and T violation. The result, A(CP) = [-3.9 ± 3.5(stat) ± 1.9(syst)] x 10⁻³, is consistent with the standard model expectation.
Publisher: Amer Physical Soc
ISSN: 0031-9007
Source: Physical Review Letters
Link to Related Resource: http://dx.doi.org/10.1103/PhysRevLett.114.0/81801
Persistent Link: http://hdl.handle.net/10735.1/4647
Bibliographic Citation: Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2015. "Study of CP Asymmetry in B⁰−B̅⁰ Mixing with Inclusive Dilepton Events." Physical Review Letters 114(8): doi:10.1103/PhysRevLett.114.081801.
Terms of Use: ©2015 American Physical Society

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