Measurement of CP violation phase phi_s and charge asymmetries in B^0_(s) decays at D0

Details Measurement of CP violation phase phi_s and charge asymmetries in B^0_(s) decays at D0 Measurement of CP violation phase phi_s and charge asymmetries in B^0_(s) decays at D0

2008-09-23

arxiv.org/abs/0809.3872v2

Physics

High Energy Physics

High Energy Physics - Experiment

reference added, constraint ambiguities sorted out

Scientific paper

The CP violation phase phi_s and charge asymmetries in B^0_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 sqrt{s}=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 B^0_s -> J/psi phi. A combination with CDF results yields a 2.2 sigma deviation from the Standard Model.

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