SEZIONE DI MILANO
Semileptonic decays of B mesons constitute a very important class of decays for determination of the elements of the Cabibbo-Kobayashi-Maskawa (CKM) matrix |Vub| and |Vcb|. An important aspect of semileptonic B decays is that they involve only one hadronic current, and can therefore be described precisely by heavy quark theory, making them suitable for precision measurements of quark-mixing parameters. Although they are “tree level processes” where Standard Model diagrams are expected to be dominant, interesting tensions have been reported. The LHCb experiment, the first experiment dedicated to the study of charm and beauty hadrons at LHC, is contributing crucial new information on these decays, exploiting its high statistics samples of b-hadron decays, including B S mesons and b-baryons. Current results and future perspectives will be reviewed. Marina Artuso (Syracuse University, USA)

DATA: 17-12-2015