Differential branching fraction and angular analysis of the $B^{+} \rightarrow K^{+}\mu^{+}\mu^{-}$ decay

Abstract : The angular distribution and differential branching fraction of the decay $B^{+} \rightarrow K^{+}\mu^{+}\mu^{-}$ are studied with a dataset corresponding to $1.0\,\mathrm{fb}^{-1}$ of integrated luminosity, collected by the LHCb experiment. The angular distribution is measured in bins of dimuon invariant mass squared and found to be consistent with Standard Model expectations. Integrating the differential branching fraction over the full dimuon invariant mass range yields a total branching fraction of $\mathcal{B}(B^{+} \rightarrow K^{+}\mu^{+}\mu^{-}) = (4.36 \pm 0.15 \pm 0.18)\times 10^{-7}$. These measurements are the most precise to date of the $B^{+} \rightarrow K^{+}\mu^{+}\mu^{-}$ decay.
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Article dans une revue
Journal of High Energy Physics, Springer, 2013, 02, pp.105. <10.1007/JHEP02(2013)105>


http://hal.in2p3.fr/in2p3-00733928
Contributeur : Sabine Starita <>
Soumis le : jeudi 20 septembre 2012 - 10:55:42
Dernière modification le : mardi 11 octobre 2016 - 13:41:01

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R. Aaij, S. Barsuk, O. Callot, J. He, B. Jean-Marie, et al.. Differential branching fraction and angular analysis of the $B^{+} \rightarrow K^{+}\mu^{+}\mu^{-}$ decay. Journal of High Energy Physics, Springer, 2013, 02, pp.105. <10.1007/JHEP02(2013)105>. <in2p3-00733928>

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