X(1576) and the Final State Interaction Effect

Details X(1576) and the Final State Interaction Effect X(1576) and the Final State Interaction Effect

2007-01-04

arxiv.org/abs/hep-ph/0701022v2

Phys.Rev.D75:074017,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 4 figures. Some typos corrected, more discussion and references added

Scientific paper

10.1103/PhysRevD.75.074017

We study whether the broad peak X(1576) observed by BES Collaboration arises from the final state interaction effect of $\rho(1450,1700)$ decays. The interference effect could produce an enhancement around 1540 MeV in the $K^+K^-$ spectrum with typical interference phases. However, the branching ratio $B[J/\psi\to \pi^{0}\rho(1450,1700)]\cdot B[\rho(1450,1700)\to K^{+}K^{-}]$ from the final state interaction effect is far less than the experimental data.

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