Study of CP violation in B−→K−π+π− and B−→K−σ(600) decays in the QCD factorization approach

In this work, we study the localized CP violation in B−→K−π+π− and B−→K−σ(600) decays by employing the quasi-two-body QCD factorization approach. Both the resonance and the nonresonance contributions are studied for the B−→K−π+π− decay. The resonance contributions include those not only from [ππ] ch...

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Bibliographic Details
Published in:Physical review. D 2019-04, Vol.99 (7), p.1
Main Authors: Qi, Jing-Juan, Guo, Xin-Heng, Wang, Zhen-Yang, Zhang, Zhen-Hua, Wang, Chao
Format: Article
Language:English
Subjects:
Asymmetry
Channels
CP violation
Decay
Divergence
Factorization
Matter & antimatter
Nonresonance
Parameters
Online Access:Get full text
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Summary:In this work, we study the localized CP violation in B−→K−π+π− and B−→K−σ(600) decays by employing the quasi-two-body QCD factorization approach. Both the resonance and the nonresonance contributions are studied for the B−→K−π+π− decay. The resonance contributions include those not only from [ππ] channels including σ(600), ρ0(770) and ω(782) but also from [Kπ] channels including K0*(700)(κ), K*(892), K0*(1430), K*(1410), K*(1680) and K2*(1430). By fitting the four experimental data ACP(K−π+π−)=0.678±0.078±0.0323±0.007 for mK−π+2
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.99.076010