Analysis of $\hat{I}{›}_b^0\to p{K}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decays

Abstract

The differential branching fraction and angular coefficients of $\hat{I}{›}_b^0\to p{K}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9${\text{fb}}^{-1}$ of integrated luminosity collected with the $\mbox{LHCb}$ detector between 2011 and 2018. The data are consistent with receiving contributions from a mixture of $\hat{I}›$ resonances with different spin-parity quantum numbers. The angular coefficients show a pattern of vector-axial vector interference that is a characteristic of the type of flavour-changing neutral-current transition relevant for these decays.

All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/3264 (LHCb public pages)