Angular analysis of the B ⁰ → K ^⁎(892) ⁰μ ⁺μ ^− decay in proton-proton collisions at s=13TeV

A full set of optimized observables is measured in an angular analysis of the decay B0→K⁎(892)0μ+μ− using a sample of proton-proton collisions at s=13TeV, collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 140 fb−1. The analysis is performed in six bins of the squared invariant mass of the dimuon system, q2, over the range 1.1