English

Dynamical origin and the pole structure of X(3872)

High Energy Physics - Phenomenology 2014-11-21 v3 High Energy Physics - Experiment

Abstract

The dynamical mechanism of channel coupling with the decay channels is applied to the case of coupled charmonium - DDDD^* states with JPC=1++J^{PC}=1^{++}. A pole analysis is done and the DDDD^* production cross section is calculated in qualitative agreement with experiment. The sharp peak at the D0D0D_0D^*_0 threshold and flat background are shown to be due to Breit-Wigner resonance, shifted by channel coupling from the original position of 3954 MeV for the 23P12^3P_1, QQˉQ\bar Q state. A similar analysis, applied to the n=2n=2, 3P2^3P_2, 1P1^1P_1, 3P0^3P_0, allows us to associate the first one with the observed Z(3930)Z(3930) J=2 and explains the destiny of 3P0^3P_0.

Keywords

Cite

@article{arxiv.1006.0211,
  title  = {Dynamical origin and the pole structure of X(3872)},
  author = {I. V. Danilkin and Yu. A. Simonov},
  journal= {arXiv preprint arXiv:1006.0211},
  year   = {2014}
}

Comments

5 pages, 4 figures. Accepted for publication in Phys. Rev. Lett

R2 v1 2026-06-21T15:30:38.323Z