Differential branching fraction and angular analysis of the B + → K + μ + μ − decay
Author(s)The LHCb Collaboration; Aaij, A.; Beteta, Abellan; Adeva, B.; Williams, Michael
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The angular distribution and differential branching fraction of the decay B+→ K+μ+μ− are studied with a dataset corresponding to 1.0fb−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 BB (B+ → K+μ+μ−) = (4.36 ± 0.15 ± 0.18) × 10−7. These measurements are the most precise to date of the B+ → K+μ+μ− decay.
DepartmentMassachusetts Institute of Technology. Department of Physics
Journal of High Energy Physics
Aaij, R., C. Abellan Beteta, A. Adametz, B. Adeva, M. Adinolfi, C. Adrover, et al. “Differential Branching Fraction and Angular Analysis of the B + → K + μ + μ − Decay.” Journal of High Energy Physics 2013, no. 2 (February 2013).
Final published version