Speaker
Description
Precision measurements of rare decays of b-mesons are excellent probes for indirect new physics searches. They are greatly suppressed in the standard model and thus are highly sensitive to contributions from new physics. Many observables serve as targets for these studies, allowing for a wide range of tests of the standard model (SM). For example, charge-parity (CP) asymmetries allow to test for contributions from CP-violating new physics. In the case of the $B \rightarrow K \mu \mu$ decay, such contributions would manifest as a deviation from the SM prediction of negligible CP-violation. This talk presents an ongoing analysis of LHCb run 1, 2 and 3 data that will measure the CP-asymmetry in this decay in bins of the invariant mass of the muon pair ($q^2$). The aim is to improve upon the precision of the previous run 1 [[1]] only measurement and adapt the binning scheme to maximise the sensitivity to CP-violation.