Differential branching fraction and angular analysis of the B + → K + μ + μ − decay
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Williams_Differential branching fraction.pdf
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632.44 KB
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Author(s)
The LHCb Collaboration
Aaij, A.
Beteta, Abellan
Adeva, B.
Williams, Michael
Date Issued
February 2013
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag/SISSA
Citation
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).
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1007/jhep02(2013)105
