Isospin breaking effects in the X(3872) resonance

Details Isospin breaking effects in the X(3872) resonance Isospin breaking effects in the X(3872) resonance

2009-05-04

arxiv.org/abs/0905.0402v2

Phys.Rev.D80:014003,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 6 figures, study on the line shape of the X(3872) added

Scientific paper

10.1103/PhysRevD.80.014003

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 $J/\psi$ 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.

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