20–27 juil. 2011
Alpes Congrès - Alpexpo
Fuseau horaire Europe/Paris

Anomalous like-sign dimuon charge asymmetry at D0

21 juil. 2011, 15:30
15m
Oisans (Alpes Congrès - Alpexpo)

Oisans

Alpes Congrès - Alpexpo

Parallel session talk Flavour Physics and Fundamental Symmetries Flavour Physics and Fundamental Symmetries

Orateur

Guennadi Borissov

Description

We present an improved measurement of the charge asymmetry $A$ of like-sign dimuon events in 9 fb$^{-1}$ of $p\overline{p}$ collisions recorded with the D0 detector at a center-of-mass energy $\sqrt{s} = 1.96$ TeV at the Fermilab Tevatron collider. From $A$, we extract the like-sign dimuon charge asymmetry in semileptonic $b$-hadron decays. We also study the dependence of charge asymmetry on muon impact parameter. Additional constraints on the $CP$ violation in the $B$ meson sector are also derived from a measurement of the flavor-specific semileptonic asymmetry in the $B^0_d\to\mu D+X$ channel.

Auteur principal

Dr Marco Verzocchi (Fermilab - PPD Division)

Documents de présentation