Speaker
Jhovanny Andres Mejia Guisao
(Universidad de Antioquia (CO))
Description
Rare B meson decays provide a sensitive probe for beyond standard model (BSM) effects. In this talk, some CMS measurements of rare B_{s,d} meson properties will be discussed, including the branching fractions and effective lifetimes.
In addition, the fractions of Bu, Bd, and Bs mesons are denoted by fu, fd, and fs, respectively. Measurements of Bs branching fractions generally rely on ratios to Bu or B0 decay modes, which requires knowledge of fs/fu or fs/fd, respectively. In fact, we will discuss how measurements of the rare decay Bs→µµ, are limited by the uncertainty in fs/fu.
