Differential branching fraction and angular analysis of the B+ -> K+mu(+)mu(-) decay

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doi:10.1007/JHEP02(2013)105

The angular distribution and differential branching fraction of the decay B0→K∗0μ+μ− are studied using a data sample, collected by the LHCb experiment in pp collisions at s√=7TeV, corresponding to an integrated luminosity of 1.0fb−1. Several angular observables are measured in bins of the dimuon invariant mass squared, q2. A first measurement of the zero-crossing point of the forward-backward asymmetry of the dimuon system is also presented. The zero-crossing point is measured to be q20=4.9±0.9GeV2/c4, where the uncertainty is the sum of statistical and systematic uncertainties. The results are consistent with the Standard Model predictions.

Aaij, R., Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., et al. (2013). Differential branching fraction and angular analysis of the B+ -> K+mu(+)mu(-) decay. JOURNAL OF HIGH ENERGY PHYSICS(2), 131 [10.1007/JHEP02(2013)105].