Event calendar file
20-26 October 2011
León, Guanajuato
Mexico/General timezone
- workshopdpyc2011@fisica.ugto.mx
Support
León, Guanajuato
-
Audiovisual-2
Electroweak and Flavor Physics
Measurement of the CP-violating phase $\phi_s^{J/\psi \phi}$ using the flavor-tagged decay $B_s^0 \rightarrow J/\psi \phi$ in 8 fb$^{-1}$ of $p \overline p$ collisions
Speakers
- Mr. Ricardo MAGAÑA VILLALBA
Primary authors
- Mr. Ricardo MAGAÑA VILLALBA (Cinvestav)
- D0 COLLABORATION (Fermi National Accelerator Laboratory)
Abstract content
We report an updated measurement of the CP-violating phase, $\phi_s^{J/\psi \phi}$, and the decay-width difference for the two mass eigenstates, $\Delta \Gamma_s$, from the flavor-tagged decay $B_s^0 \rightarrow J/\psi \phi$. The data sample corresponds to an integrated luminosity of 8.0 fb$^{-1}$ accumulated with the D0 detector using $p \overline p$ collisions at $\sqrt{s} = 1.96$ TeV produced at the Fermilab Tevatron collider. The 68% confidence level intervals, including systematic uncertainties, are $\Delta \Gamma_s = 0.163 +0.065 -0.064 ps^{-1}$ and $\phi_s^{J/\psi \phi} = -0.55 +0.38 -0.36$. The $p$-value for the Standard Model point is 29.8%.
