Global CP asymmetries in charmless three-body B decays with final state interactions

Physics Letters B

D. Torres Machado¹  I. Bediaga²  T. Frederico³  P.C. Magalhães³ 

[1] H.H. Wills Physics Laboratory, University of Bristol, Bristol, BS8 1TLB, United Kingdom;Centro Brasileiro de Pesquisas Físicas, 22.290-180 Rio de Janeiro, RJ, Brazil;Instituto Tecnológico de Aeronáutica, 12.228-900 São José dos Campos, SP, Brazil;

关键词: Heavy meson;    Three-body decay;    CP violation;    Final state interactions;   

DOI  :  

来源: DOAJ

【 摘 要 】

We propose a theoretical framework to understand the observable global charge-parity (CP) violation in charmless three-body B± decays. The decay amplitudes consider the effects of the ππ→KK rescattering treated within a CPT invariant framework together with the U-spin symmetry relation, s↔d, which results π↔K in the final state. This approach applied to a two-channel model provides the magnitudes and signs of the ratios of the global CP asymmetries for B±→K±π+π−, B±→K±K+K−, B±→π±K+K−, and B±→π±π+π− decays, qualitatively consistent with those obtained from the available experimental data. In addition, by considering the neutral channels, we predict the ratios for the global CP asymmetries for these decays.

【 授权许可】

Unknown