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arXiv · 0905.0402

Isospin breaking effects in the X(3872) resonance

Daniel Gamermann·Eulogio Oset
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Abstract

In 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 $J/ψ$ 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.

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Daniel Gamermann, Eulogio Oset. 2009-06-12. Isospin breaking effects in the X(3872) resonance. https://doi.org/10.1103/physrevd.80.014003

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