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Isospin breaking effects in the X(3872) resonance

AuthorsOset, Eulogi ; Gamermann, Daniel
Issue Date7-Jul-2009
PublisherAmerican Physical Society
CitationPhysical Review - Section D - Particles and Fields 80 (1): 014003 (2009)
AbstractIn this paper we study the effects of isospin breaking in the dynamical generation of the X(3872) state. We also calculate the ratio of the branching fractions of the $X$ decaying into $J/\psi$ with two and three pions, which has been measured experimentally to be close to unity. Together with the X(3872), of positive C-parity, we predict the existence of a negative C-parity state and we comment on which decay channel is more promising to observe this state.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.80.014003
Appears in Collections:(IFIC) Artículos
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