English

Cross sections of e+e- --> gamma VV and e+e- --> gamma gamma V

High Energy Physics - Phenomenology 2008-11-26 v1

Abstract

Cross sections of the e+e- annihilation into one photon plus two vector mesons, such as J/psi rho, J/psi phi, and rho phi at the center of mass energy \sqrt{s}=10.58GeV are calculated. These shed light on the measurement of the e+e- annihilation cross section via radiative return in B-factories. At another center of mass energy \sqrt{s}=3.097GeV, namely the J/psi resonance peak, the processes e+e- --> gamma VV and e+e- --> gamma gamma V (with V being rho, omega, or phi) are calculated with similar method. These calculations give estimation of the background levels in the study of radiative or double radiative decays of J/psi.

Keywords

Cite

@article{arxiv.0803.1882,
  title  = {Cross sections of e+e- --> gamma VV and e+e- --> gamma gamma V},
  author = {K. Zhu and C. Z. Yuan and R. G. Ping},
  journal= {arXiv preprint arXiv:0803.1882},
  year   = {2008}
}

Comments

9 pages, 4 figures, revtex

R2 v1 2026-06-21T10:21:05.153Z