X(3872) -> J/psi gamma decay in the D(D)over-bar* molecular picture
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X(3872) -> J/psi gamma decay in the D(D)over-bar* molecular picture

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X(3872) -> J/psi gamma decay in the D(D)over-bar* molecular picture

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dc.contributor.author Aceti, Francesca
dc.contributor.author Molina Peralta, Raquel
dc.contributor.author Oset Báguena, Eulogio
dc.date.accessioned 2014-09-24T10:22:51Z
dc.date.available 2014-09-24T10:22:51Z
dc.date.issued 2012
dc.identifier.uri http://hdl.handle.net/10550/38950
dc.description.abstract From a picture of the X(3872) where the resonance is a bound state of D (D) over bar*- c.c., we evaluate the decay width into the J/psi gamma channel, which is sensitive to the internal structure of this state. For this purpose we evaluate the loops through which the X(3872) decays into its components, and the J/psi and the photon are radiated from these components. We use the local hidden gauge approach extrapolated to SU(4) with a particular SU(4) breaking. The radiative decay involves anomalous couplings, and we obtain acceptable values which are compared to experiments and results of other calculations. Simultaneously, we evaluate the decay rate for the X(3872) into J/psi omega and J/psi rho, and the results obtained for the ratio of these decay widths are compatible with the experiment. We also show that considering only the (D) over bar D-0*(0) ¿ c.c. component in the radiative decay reduces the partial decay width in more than three orders of magnitude, in large discrepancy with experiment.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2012, vol. 86, num. 11, p. 113007
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Aceti, Francesca Molina Peralta, Raquel Oset Báguena, Eulogio 2012 X(3872) -> J/psi gamma decay in the D(D)over-bar* molecular picture Physical Review D 86 11 113007
dc.subject Física
dc.title X(3872) -> J/psi gamma decay in the D(D)over-bar* molecular picture
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-09-24T10:22:51Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevD.86.113007
dc.identifier.idgrec 083282

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