CP violation for B⁺_c→ D_(s)⁺π⁺π^- in Perturbative QCD

2016/06/30 by Gang Lü, Sheng-Tao Li, Yu-Ting Wang
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1103/physrevd.94.034040

published as Phys. Rev. D 94, 034040 (2016) · arXiv admin note: text overlap with arXiv:1112.1257, arXiv:0704.3132 by other authors

arxiv created 2016/06/30 · arxiv updated 2016/08/31

Abstract

In the perturbative QCD (PQCD) approach we study the direct CP violation in B⁺_c→ D_(s)⁺ρ⁰(ω) → D_(s)⁺π⁺π^- via the ρ-ω mixing mechanism. We find that the CP violation can be enhanced by ρ-ω mixing when the invariant masses of the π⁺π^- pairs are in the vicinity of the ω resonance. For the decay process B⁺_c→ D⁺ρ⁰(ω) → D⁺π⁺π^-, the maximum CP violation can reach 7.5 %.

Citations

• Two-bodyBc→D(s)(*)P,D(s)(*)Vdecays in the perturbative QCD approach
• Direct CP violation in B⁰ → ρ⁰(ω)ρ⁰(ω) → π⁺π^-π⁺π^-