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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Suppressed B -> PV CP asymmetry: CPT constraint

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Autor(es):
Alvarenga Nogueira, J. H. ; Bediaga, I. ; Frederico, T. ; Magalhaes, P. C. ; Molina Rodriguez, J.
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: Physical Review D; v. 94, n. 5 SEP 21 2016.
Citações Web of Science: 5
Resumo

Charge parity asymmetry in charmless B meson decays is a key issue to be understood. Many theoretical calculations have been performed using short distance factorization approaches which, in general, do not take into account the CPT invariance constraint. For each channel with CP violation there is an equal amount of CP asymmetry in another channel or other channels, with an opposite sign. This happens if these channels are coupled through final state interactions. In the specific process B -> PV, involving one pseudoscalar and one vector particle in the final state, we argue that the CP asymmetry, inherent from a short distance mechanism, could be suppressed due to the CPT constraint. In this case, we propose a sensitive and practical experimental method to identify even a small CP asymmetry, which provides the values for A(CP) without the need for an amplitude analysis. This method, if applied directly to data, will enable one to extract the CP asymmetry information in a model independent way and check to which extent the suggested suppression due to the CPT constraint is verified. (AU)

Processo FAPESP: 14/19094-8 - Decaimentos de mésons pesados em três corpos e violação CP
Beneficiário:Jorge Henrique de Alvarenga Nogueira
Linha de fomento: Bolsas no Brasil - Doutorado Direto