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

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Autor(es):
Alvarenga Nogueira, J. H. ; Bediaga, I. ; Cavalcante, A. B. R. ; Frederico, T. ; Lourenco, O.
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: PHYSICAL REVIEW D; v. 92, n. 5, p. 16-pg., 2015-09-09.
Resumo

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. (AU)

Processo FAPESP: 14/19094-8 - Decaimentos de mésons pesados em três corpos e violação CP
Beneficiário:Jorge Henrique de Alvarenga Nogueira
Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
Processo FAPESP: 13/26258-4 - Matéria superdensa no universo
Beneficiário:Manuel Máximo Bastos Malheiro de Oliveira
Modalidade de apoio: Auxílio à Pesquisa - Temático