Angular analysis of charged and neutral B -> K mu( ) mu(-) decays

作者：Aaij, R^*; Adeva, B; Adinolfi, M; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Alvarez Cartelle, P; Alves, A A , Jr; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Anderson, J; Andreassen, R; Andreotti, M; Andrews, J E; Appleby, R B; Gutierrez, O Aquines; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, J J; Badalov, A; Balagura, V; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S; Barter, W

来源：The Journal of High Energy Physics, 2014, 2014(5): 082.

DOI：10.1007/JHEP05(2014)082

• Rare decay
• B physics
• Flavour Changing Neutral Currents
• Flavor physics
• Hadron-Hadron Scattering

The angular distributions of the rare decays B -> K mu( )mu(-) and B-0 -> K-S(0)mu( )mu(-) are studied with data corresponding to 3 fb(-1) of integrated luminosity, collected in proton-proton collisions at 7 and 8 TeV centre-of-mass energies with the LHCb detector. The angular distribution is described by two parameters, F-H and the forward-backward asymmetry of the dimuon system A(FB), which are determined in bins of the dimuon mass squared. The parameter F-H is a measure of the contribution from (pseudo)scalar and tensor amplitudes to the decay width. The measurements of A(FB) and F-H reported here are the most precise to date and are compatible with predictions from the Standard Model.

• 出版日期2014-5-19
• 单位清华大学; 华中师范大学