English

Survival before annihilation in Psi-prime decays

High Energy Physics - Phenomenology 2008-11-26 v1 High Energy Physics - Experiment

Abstract

We extend the simple scenario for Ψ\Psi' decays suggested a few years ago. The ccˉc\bar c pair in the Ψ\Psi' does not annihilate directly into three gluons but rather survives before annihilating. An interesting prediction is that a large fraction of all Ψ\Psi' decays could originate from the Ψηc(3π)\Psi' \to \eta_{c} (3\pi) channel which we urge experimentalists to identify. Our model solves the problem of the apparent hadronic excess in Ψ\Psi' decays as well as the ρπ\rho\pi puzzle since, in our view, the two-body decays of the Ψ\Psi' are naturally of electromagnetic origin. Further tests of this picture are proposed, e.g. J/Ψb1ηJ/\Psi \to b_{1}\eta.

Cite

@article{arxiv.hep-ph/0506325,
  title  = {Survival before annihilation in Psi-prime decays},
  author = {P. Artoisenet and J. -M. Gerard and J. Weyers},
  journal= {arXiv preprint arXiv:hep-ph/0506325},
  year   = {2008}
}

Comments

6 pages, no figure

R2 v1 2026-07-22T14:02:40.931Z