An empirical model to determine the hadronic resonance contributions (B)over-bar(0) -> (K)over-bar*(0)mu(+) mu(-) to transitions

作者：Blake T; Egede U; Owen P; Petridis K A; Pomery G^*

来源：European Physical Journal C, 2018, 78(6): 453.

DOI：10.1140/epjc/s10052-018-5937-3

A method for analysing the hadronic resonance contributions in (B) over bar (0) -> (K) over bar*mu(+) mu(-) ecays is presented. This method uses an empirical model that relies on measurements of the branching fractions and polarisation amplitudes of final states involving J(PC) = 1(--) resonances, relative to the shortdistance component, across the full dimuon mass spectrum of (B) over bar (0) -> (K) over bar*mu(+) mu(-) transitions. The model is in good agreement with existing calculations of hadronic non-local effects. The effect of this contribution to the angular observables is presented and it is demonstrated how the narrow resonances in the q(2) spectrum provide a dramatic enhancement to CP-violating effects in the short-distance amplitude. Finally, a study of the hadronic resonance effects on lepton universality ratios, R-K(*), in the presence of new physics is presented.

• 出版日期2018-6-6