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Measurement of the CP asymmetry in B(0)→K(*0)μ(+)μ(-) decays
R Aaij1, C Abellan Beteta, A Adametz
1Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
Abstract:
A measurement of the CP asymmetry in B(0)→K(*0)μ(+)μ(-) decays is presented, based on 1.0 fb(-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 μ(+)μ(-) pair, excluding the J/ψ and ψ(2S) resonance regions. Production and detection asymmetries are removed using the B(0)→J/ψK(*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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