New measurements of rare B meson decays by the CMS experiment

by Dmytro Kovalskyi (MIT)

Wednesday 26 Oct 2022, 15:00 → 16:00 Europe/Rome

1/1-2 - Aula "C. Voci" (Dipartimento di Fisica e Astronomia - Edificio Marzolo)

A number of anomalies have been observed in rare B decays by the LHCb experiment indicating a potential new physics contribution. To understand the nature of these anomalies and to confirm their existence we need to have independent measurements performed by other experiments. In this seminar, a new measurement of the Bs → μμ branching fraction and effective lifetime, as well as results of a search for the B0 → μμ decay will be presented. The analysis is based on proton-proton collision data collected by the CMS experiment at the 13 TeV center of mass energy during the LHC Run 2, corresponding to an integrated luminosity of 140/fb.

2022-10-10 Bmm Seminar.pdf