Production of the Y(4260) state in B meson decay

Autor(es)

Albuquerque, R. M. ^[1] ; Nielsen, M. ^[2] ; Zanetti, C. M. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Inst Fis, BR-05389970 Sao Paulo, SP - Brazil

^[3] Univ Estado Rio de Janeiro, Fac Tecnol, BR-27537000 Resende, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters B; v. 747, p. 83-87, JUL 30 2015.
• Citações Web of Science: 3

Resumo

We calculate the branching ratio for the production of the meson Y(4260) in the decay B- -> Y(4260)K-. We use QCD sum rules approach and we consider the Y(4260) to be a mixture between charmonium and exotic tetraquark, {[}(c) over bar(q) over bar]{[}qc], states with J(PC) = 1(--). Using the value of the mixing angle determined previously as: theta = (53.0 +/- 0.5)degrees we get the branching ratio B(B -> Y(4260)K) (1.34 +/- 0.47) x 10(-6), which allows us to estimate an interval on the branching fraction 3.0 x 10(-8) < B-Y < 1.8 x 10(-6) in agreement with the experimental upper limit reported by BaBar Collaboration. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license. (AU)

• Processo FAPESP: 12/22815-3 - Largura dos Estados Hadrônicos e Correções Radiativas em Regras de Soma da QCD
• Beneficiário: Raphael Moreira de Albuquerque
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado