High Energy Physics Seminars
| High Energy
Wednesday, April 4, 2012
Physics Building, Room 204
[Host: Brad Cox]
Johns Hopkins University
"Measurement of CP Violation in Bs to J/Psi Phi Decays at CDF"
We present a measurement of the CP-violating parameter beta_s using
approximately 6500 Bs to J/Psi Phi decays reconstructed with the CDFII
detector in a sample corresponding to 5.2/fb of integrated luminosity.
We find the CP-violating phase to be within the range
[0.02, 0.52] U [1.08, 1.55]$ at 68%
We consider the inclusion of a potential S-wave contribution to the
Bs to J/psi K+K- final state which is found to be negligible over the
KK mass interval considered. We also present measurements of the
Bs decay width difference and mean lifetime as well as the
final state polarization fractions.
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