Looking for meson molecules in B decays
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
04/11/2013
04/11/2013
2012
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Resumo |
We discuss the possibility of observing a loosely bound molecular state in a three-body hadronic B decay. In particular, we use the QCD sum rule approach to study eta' - pi molecular current. We consider an isovector-scalar I(G)J(PC) = 1(-)0(++) molecular current, and we use two- and three-point functions to study the mass and decay width of such a state. We consider the contributions of condensates up to dimension six, and we work at leading order in alpha(s). We obtain a mass around 1.1 GeV, consistent with a loosely bound state, and eta' - pi -> K+K- decay width around 10 MeV. Brazilian funding agency CNPq Brazilian funding agency FAPESP |
Identificador |
PHYSICAL REVIEW D, COLLEGE PK, v. 86, n. 1, pp. 917-920, 41456, 2012 1550-7998 http://www.producao.usp.br/handle/BDPI/37963 10.1103/PhysRevD.86.016005 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC COLLEGE PK |
Relação |
PHYSICAL REVIEW D |
Direitos |
openAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #QCD SUM-RULES #FORM-FACTORS #STATES #FÍSICA DE PARTÍCULAS #ASTROFÍSICA #ASTRONOMY & ASTROPHYSICS #PHYSICS, PARTICLES & FIELDS |
Tipo |
article original article publishedVersion |