Measurement of the CP-violating phase ϕ_s^J/ψϕ at D0

2011/10/04 by A. Chandra, Chandra, A.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Neutrino Physics Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.48550/arxiv.1110.0859

To be published in the proceedings of DPF-2011 Conference, Providence, RI, August 8-13, 2011

arxiv created 2011/10/04 · openalex publication_date 2011/10/04 · arxiv updated 2011/10/06 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

Abstract

This paper is a report of an updated measurement of the CP-violating phase and the decay width difference for the two mass eigenstates from flavor-tagged decay Bs0 to J/psi phi. The 68% confidence level intervals, including systematic uncertainties, are phi_s=-0.55 ^+0.38_-0.36 and ΔΓ_s = 0.163 ^+0.065_-0.064 ps^-1. This measurement is in agreement with SM expected value, the p-value for the Standard Model point is 29.8%. The data sample corresponds to an integrated luminosity of 8.0 fb^-1 accumulated with the D0 detector at the Fermilab Tevatron collider.

Related

• Measurement of CP violation phase phi_s and charge asymmetries in B⁰_(s) decays at D0
• CP Violation with Bs -> J/Psi phi at the Tevatron
• CP Violation Results from D0
• Studies of CP-conserving and CP-violating Bs mixing parameters with the D0 experiment
• Measurement of beta_s at CDF