Can the X(4350) narrow structure be a 1(-+) exotic state?
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2010
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Resumo |
Using the QCD sum rules we test if the new narrow structure, the X(4350) recently observed by the Belle Collaboration, can be described as a J(PC) = 1(-+) exotic D(s)(*)D(s0)(*) molecular state. We consider the contributions of condensates up to dimension eight, we work at leading order in alpha(s) and we keep terms which are linear in the strange quark mass Ins. The mass obtained for such state is m(Ds*Ds0*) = (5.05 +/- 0.19) GeV. We also consider a molecular 1(-+), D(s)(*)D(s0)(*); current and we obtain m(D*D0*) = (4.92 +/- 0.08) GeV. We conclude that it is not possible to describe the X(4350) structure as a 1(-+) D(s)(*)D(s0)(*) molecular state. (C) 2010 Elsevier B.V. All rights reserved. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) FAPESP Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) CNPq-Brazil |
Identificador |
PHYSICS LETTERS B, v.690, n.2, p.141-144, 2010 0370-2693 http://producao.usp.br/handle/BDPI/29115 10.1016/j.physletb.2010.05.024 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV |
Relação |
Physics Letters B |
Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #Non-perturbative methods #Exotic-charmonium states #QCD sum rules #QCD SUM-RULES #TAU-DECAYS #SYMMETRY #ALPHA(S) #MASS #Physics, Multidisciplinary |
Tipo |
article original article publishedVersion |