An angular analysis of the decay Bd0 → K∗μ+μ− is presented, based on proton-proton collision data recorded by the ATLAS experiment at the LHC. The study is using 20.3 fb−1 of integrated luminosity collected during 2012 at centre-of-mass energy of s=8 TeV. Measurements of the K* longitudinal polarisation fraction and a set of angular parameters obtained for this decay are presented. The results are compatible with the Standard Model predictions.[Figure not available: see fulltext.].

Angular analysis of Bd0 → K ∗ μ + μ − decays in pp collisions at √s=8 TeV with the ATLAS detector

Capua M.;Crosetti G.;Mastroberardino A.;Meoni E.;Schioppa M.;