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X(4260) as a mixed charmonium-tetraquark state

Raphael Moreira de Albuquerque Jorgivan Morais Dias; Marina Nielsen; C M Zanetti

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Título:
X(4260) as a mixed charmonium-tetraquark state
Autor: Raphael Moreira de Albuquerque
Jorgivan Morais Dias; Marina Nielsen; C M Zanetti
Assuntos: CROMODINÂMICA QUÂNTICA
Notas: arXiv.1311.7467
Descrição: Using the QCD sum rule approach we study the X(4260) state assuming that it can be described by a mixed charmonium-tetraquark current with J P C=1--quantum numbers. For the mixing angle around ' (53:0 0:5)o , we obtain a value for the mass which is in good agreement with the experimental mass of the X(4260). For the decay width into the channel X->J= we nd the value ``tau´IND.X->J= ' (4:1 0:6)MeV, which is much smaller than the total experimental width `tau´' (108 12) MeV. However, considering the experimental upper limits for the decay of the X(4260) into open charm, we conclude that we cannot rule out the possibility of describing this state as a mixed charmonium-tetraquark state.
Editor: São Paulo
Data de criação/publicação: 2013
Formato: 9 p..
Idioma: Inglês

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