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Measurement of the CP asymmetry in B0 -> K*0 mu+ mu- decays

Abstract : A measurement of the CP asymmetry in B0 -> K*0 mu+ mu- decays is presented, based on 1.0fb-1 of pp collision data recorded by the LHCb experiment during 2011. The measurement is performed in six bins of invariant mass squared of the mu+ mu- pair, excluding the J/psi and psi(2S) resonance regions. Production and detection asymmetries are removed using the B0 -> J/Psi K*0 decay as a control mode. The integrated CP asymmetry is found to be -0.072 +- 0.040 (stat.) +- 0.005 (syst.), consistent with the Standard Model.
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http://hal.in2p3.fr/in2p3-00742909
Contributor : Sabine Starita <>
Submitted on : Wednesday, October 17, 2012 - 3:55:21 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:11 PM

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R. Aaij, S. Barsuk, O. Callot, J. He, B. Jean-Marie, et al.. Measurement of the CP asymmetry in B0 -> K*0 mu+ mu- decays. Physical Review Letters, American Physical Society, 2013, 110, pp.031801. ⟨10.1103/PhysRevLett.110.031801⟩. ⟨in2p3-00742909⟩

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