8-13 August 2011
Rhode Island Convention Center
US/Eastern timezone

Anomalous like-sign dimuon charge asymmetry at D0

Aug 9, 2011, 4:40 PM
551 B (Rhode Island Convention Center)

551 B

Rhode Island Convention Center

Parallel contribution CP-Violation CP-Violation


Bruce Hoeneisen (Universidad San Francisco de Quito)


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.

Primary author

Bruce Hoeneisen (Universidad San Francisco de Quito)

Presentation materials