Angular analysis of the decay B⁺ → K*(892)⁺μ⁺ μ⁻ in proton-proton collisions at √s = 8 TeV


Angular distributions of the decay B(^{+}) → K*(892)(^{+}) μ(^{+}) μ(^{−}) are studied using events collected with the CMS detector in (\sqrt{s})=8TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 20.0 fb⁻¹. The forward-backward asymmetry of the muons and the longitudinal polarization of the K*(892)(^{+}) meson are determined as a function of the square of the dimuon invariant mass. These are the first results from this exclusive decay mode and are in agreement with a standard model prediction.

High Energy Physics - Experiment, B physics, Hadron-Hadron scattering (experiments)
Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Escalante Del Valle, A., Frühwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Pitters, F. M., Rad, N., Schieck, J., Schöfbeck, R., Spanring, M., Templ, S., … Vetens, W. (2021). Angular analysis of the decay B+ → K∗(892)+μ+μ− in proton-proton collisions at $ \sqrt{\mathrm{s}} $ = 8 TeV. In Journal of High Energy Physics (Vol. 2021, Issue 4). Springer Science and Business Media LLC.