CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD

Journal Article · Fri Aug 04 04:00:00 UTC 2017 · European Physical Journal. C, Particles and Fields

DOI: https://doi.org/10.1140/epjc/s10052-017-5091-3 · OSTI ID:1411662

Lü, Gang ^[1]; Lu, Ye ^[2]; Li, Sheng-Tao ^[1]; Wang, Yu-Ting ^[1]

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1. Henan Univ. of Technology, Zhengzhou (China). College of Science
2. Guangxi Normal Univ., Guilin (China). Dept. of Physics

In a perturbative QCD approach we study the direct CP violation in the pure annihilation decay process of $$\bar{B}$$$$0\atop{s}$$→π⁺π^-π⁺π^- induced by the ρ and ω double resonance effect.Generally, the CP violation is small in the pure annihilation type decay process. But, we find that the CP violation can be enhanced by doubleinterference when the invariant masses of the π ⁺ π ^- pairs are in the vicinity of the ω resonance. For the decay process of $$\bar{B}$$$$0\atop{s}$$→π⁺π^-π⁺π^-, the CP violation can reach ACP($$\bar{B}$$$$0\atop{s}$$→π⁺π^-π⁺π^-)=27.20$$+0.05+0.28+7.13\atop{-0.15-0.31-6.11}$$%.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC02-05CH11231
• OSTI ID: 1411662
• Journal Information: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 8 Vol. 77; ISSN 1434-6044
• Publisher: SpringerCopyright Statement
• Country of Publication: United States
• Language: English