Study of CP asymmetry in B^{0}-B[over ¯]^{0} mixing with inclusive dilepton events

Physical Review Letters
J P Lees(BABAR Collaboration)

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)→BB[over ¯] events, using the complete data set recorded by the BABAR experiment near the ϒ(4S) resonance, corresponding to 471×10^{6} BB[over ¯] pairs. The asymmetry A_{CP} allows comparison between the mixing probabilities P(B[over ¯]^{0}→B^{0}) and P(B^{0}→B[over ¯]^{0}), and therefore probes CP and T violation. The result, A_{CP}=[-3.9±3.5(stat)±1.9(syst)]×10^{-3}, is consistent with the standard model expectation.

References

Aug 16, 2006·Physical Review Letters·B AubertUNKNOWN BABAR Collaboration
Feb 7, 2013·Physical Review Letters·V M AbazovUNKNOWN D0 Collaboration
Aug 29, 2014·Physical Review Letters·J P LeesUNKNOWN BABAR Collaboration

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Citations

Aug 20, 2016·Physical Review Letters·R AaijUNKNOWN LHCb Collaboration
Dec 22, 2016·Reports on Progress in Physics·T Gershon, V V Gligorov
Feb 16, 2016·Annalen der Physik·Neville Harnew

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