D0 Evidence for CP Violation and Implication for CPT Violation in B-Meson Mixing

Details D0 Evidence for CP Violation and Implication for CPT Violation in B-Meson Mixing D0 Evidence for CP Violation and Implication for CPT Violation in B-Meson Mixing

2010-08-17

arxiv.org/abs/1008.2813v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure; presented at the Fifth Meeting on CPT and Lorentz Symmetry, Indiana University, Bloomington, Indiana, June

Scientific paper

An analysis from the D0 Collaboration measuring the charge asymmetry A^b_sl of like-sign dimuon events due to semileptonic b-hadron decays at the Fermilab Tevatron Collider is described. It differs by 3.2 standard deviations from the Standard Model prediction to provide first evidence of CPT-invariant anomalous CP violation in the mixing of neutral B mesons, and is compared to the CP-violating phase obtained from a D0 analysis of the time-dependent decay angles in B0_s -> J/psi phi. If CPT violation is allowed, the dimuon asymmetry also yields the first sensitivity to CPT violation in the B0_s system.

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