Studies of CP-conserving and CP-violating Bs mixing parameters with the D0 experiment

2007/10/17 by James Walder, Walder, James
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.0710.3235

Submitted for the SUSY07 proceedings

arxiv created 2007/10/17 · arxiv updated 2009/12/01

Abstract

This paper summarises the recent results of the Run IIa D0 experiment at the Tevatron Collider at Fermilab on the observable parameters of the B_s meson. A measurement of the branching fraction B_s->D_s^(*)D_s^(*) is reported, which provides an estimate of the width difference ΔΓ_s^CP/ΔΓ_s. Through the decay B_s → J/ψϕ the width difference ΔΓ_s is extracted, and for the first time a constraint is set on the CP-violating phase ϕ_s, although a four-fold ambiguity remains. This result is combined with other D0 measurements to yield ΔΓ_s=0.13±0.09 \rm ps^-1, ϕ_s = -0.70^+0.47_-0.39.

Related

• Measurement of the CP-violating phase ϕ_s^J/ψϕ at D0
• Mixing and CP Violation at the Tevatron
• Measurement of B_s mixing phase at CDF
• Bs Mixing, DeltaGamma_s and CP Violation
• CP Violation in the B_s⁰ system