CP violation: Dalitz interference, CPT, and final state interactions

被引：44

作者：

Alvarenga Nogueira, J. H. ^{[1
]}

Bediaga, I. ^{[2
]}

Cavalcante, A. B. R. ^{[2
]}

Frederico, T. ^{[1
]}

Lourenco, O. ^{[3
]}

机构：

[1] Inst Tecnol Aeronaut, DCTA, BR-12228900 Sao Paulo, Brazil

[2] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil

[3] Univ Fed Sao Carlos, CCA, Dept Ciencias Nat Matemat & Educ, BR-13600970 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW D | 2015年 / 92卷 / 05期

基金：

巴西圣保罗研究基金会;

关键词：

DECAYS; QCD;

D O I：

10.1103/PhysRevD.92.054010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Resonances and final state interactions (FSI) play a role in the formation of charge parity (CP) violation (CPV) constrained by CPT invariance. We provide a general formulation of CPV including resonances and FSI starting from the CPT constraint. Our discussion is elaborated within a simple B decay model with the rho and f(0)(980) resonances plus a nonresonant background including the pi pi -> KK coupled amplitude. We consider a few illustrative examples to show the interference patterns appearing in the CP asymmetry, namely, that from the. resonance plus a nonresonant amplitude, and that from the interference of the. and f (0)(980) resonances. We perform the fit of the CP asymmetry for the charmless three-body B-+/- decay channel B+ -> pi(+)pi(+)pi(-) and obtain as outcome the B+ -> pi+K+K- for pp channel asymmetry in the mass region below 1.6 GeV in fair agreement with the new LHCb data. Analogously, we also describe the CP asymmetry of the B-+/- -> K-+/-pi(+)pi(-) decay, with that from the B-+/- -> (KK+K-)-K-+/- channel obtained as output. As in the previous case, we also found agreement with LHCb experimental data.

引用

页数：16

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