DPF 2011

Measurement of CP violating parameters in the decay Bs -> J/psi phi

10 Aug 2011, 17:42

24m

551 B (Rhode Island Convention Center)

Parallel contribution CP-Violation CP-Violation

Speaker

Dr Avdhesh Chandra (Rice University)

Description

We report a new measurement of the $CP$-violating phase ${\varphi }_s$, of the decay width difference for the two mass eigenstates $\mathrm{\Delta }{\mathrm{\Gamma }}_s$, of the mean $B_s^0$ lifetime ${\bar{\tau }}_s$, and of magnitudes of the decay amplitudes, from the flavor-tagged decay $B_s^0\to J/\psi \varphi$. For the first time, we consider possible contributions from the decay $B_s^0\to J/\psi K^{+}{K}^{-}$, with the $K^{+}{K}^{-}$ in a $s$ wave. This measurement is based on 8 fb${}^{-1}$ of $p\bar{p}$ collisions recorded with the D0 detector at a center-of-mass energy $\sqrt{s}=1.96$ TeV at the Fermilab Tevatron collider.

Presentation materials

Slides

talk