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arXiv · 1807.02049

Effect of resonance for $CP$ asymmetry of the decay process $\bar{B}_{s}\rightarrow P\pi^+\pi^-$ in perturbative QCD

Gang Lü·Yu-Ting Wang·Qin-Qin Zhi
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Abstract

In the framework of Perturbative QCD (PQCD) approach we study the direct $CP$ asymmetry for the decay channel $\bar{B}_{s}\rightarrow P\pi^+\pi^-$ around the resonance range via the $\rho-\omega$ mixing mechanism (where P refer to pseudoscalar meson). We find that the $CP$ asymmetry can be enhanced by $\rho-\omega$ mixing when the masses of the $\pi^+\pi^-$ pairs are at the area of $\rho-\omega$ resonance, and the maximum $CP$ asymmetry can reach 59{\%} for the relevant decay channels.

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Gang Lü, Yu-Ting Wang, Qin-Qin Zhi. 2018-07-05. Effect of resonance for $CP$ asymmetry of the decay process $\bar{B}_{s}\rightarrow P\pi^+\pi^-$ in perturbative QCD. https://doi.org/10.1103/physrevd.98.013004

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