Measurement of CP violation phase phi_s and charge asymmetries in B⁰_(s) decays at D0

2008/09/23 by Lars Sonnenschein, Sonnenschein, Lars
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.0809.3872

reference added, constraint ambiguities sorted out

openalex publication_date 2008/09/23 · arxiv created 2008/09/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The CP violation phase phi_s and charge asymmetries in B⁰_s decays have been measured by the D0 experiment in Run II of the Fermilab Tevatron Collider where proton anti-proton collisions take place at a center of mass energy of sqrts=1.96 TeV. The measurements are based on integrated luminosities between 1.0 fb^-1 and 2.8 fb^-1. A 1.8 sigma deviation from the Standard Model is observed in the measurement of the CP violation phase phi_s=-0.57^+0.24_-0.30 (stat) ^+0.07_-0.02 (syst) rad in the decay channel B⁰_s -> J/psi phi. A combination with CDF results yields a 2.2 sigma deviation from the Standard Model.

Citations

• Averages of b-hadron and c-hadron Properties at the End of 2007

Related

• Measurement of the CP-violating phase ϕ_s^J/ψϕ at D0
• CP Violation Results from D0
• CP Violation with Bs -> J/Psi phi at the Tevatron
• Measurement of φ_s at LHCb
• Measurements of CP Asymmetries in the Decay B --> Phi K