Speaker
Description
This talk presents a new, high-precision angular analysis of the decay $B^0_s \rightarrow J/\psi \overline{K}{}^{*}\kern-1pt(892)^{0}$ using the full 13 TeV dataset from the LHCb experiment's Run 2. We have extracted the decay’s polarization fractions and CP asymmetries, yielding the most precise determination of these observables to date. These measurements serve as a crucial input for constraining the impact of "penguin pollution" on the measurement of the CP-violating phase $\phi_s$ from the benchmark $B^0_s \rightarrow J/\psi \phi$ analysis.
To provide a comprehensive set of constraints, which is our final goal, the presentation will also cover new, unblinded results from the $B^0 \rightarrow J/\psi \rho^{0}(770)$ channel and published findings from the $B^+ \rightarrow J/\psi \pi^{+}$ analysis.
