Angular analysis of the decay B+ -> K+mu(+)mu(-) in proton-proton collisions at root s=8 TeV

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American Physical Society

The angular distribution of the flavor-changing neutral current decay ({B}^{+}\to {K}^{+}{\mu }^{+}{\mu }^{-}) is studied in proton-proton collisions at a center-of-mass energy of 8 TeV. The analysis is based on data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of (20.5\text{}\text{}{\mathrm{fb}}^{-1}). The forward-backward asymmetry ({A}{\mathrm{FB}}) of the dimuon system and the contribution ({F}{H}) from the pseudoscalar, scalar, and tensor amplitudes to the decay width are measured as a function of the dimuon mass squared. The measurements are consistent with the standard model expectations.

PARTICLE, B-0, Astronomy & Astrophysics, Physics, Particles & Fields, Physics
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Erö, J., Escalante Del Valle, A., Flechl, M., Frühwirth, R., Ghete, V. M., Hrubec, J., Jeitler, M., Krammer, N., Krätschmer, I., … Liko, D. (2018). Angular analysis of the decay B+→K+μ+μ− in proton-proton collisions at s=8  TeV. In Physical Review D (Vol. 98, Issue 11). American Physical Society (APS).