English

Probing Proton Strangeness with Time-Like Virtual Compton Scattering

Nuclear Theory 2014-11-18 v1

Abstract

We document that p(gamma,e+e-)p measurements will yield new, important information about the off-shell time-like nucleon form factors, especially in the phi meson region (q^2 = M^2_{phi}) governing the phi N couplings g^{V,T}_{\phi N N}. Calculations for p(gamma,e+e-)p, utilizing vector meson dominance, predict measurable phi enhancements at high |t| compared to the expected phi background production from pi, eta and Pomeron exchange. The phi form factor contribution generates a novel experimental signature for OZI violation and the proton strangeness content. The phi N couplings are determined independently from a combined analysis of the neutron electric form factor and recent high |t| phi photoproduction. The pi, eta and Pomeron transition form factors are also predicted and the observed pi and eta transition moments are reproduced.

Keywords

Cite

@article{arxiv.nucl-th/0205061,
  title  = {Probing Proton Strangeness with Time-Like Virtual Compton Scattering},
  author = {Stephen R. Cotanch and Robert A. Williams},
  journal= {arXiv preprint arXiv:nucl-th/0205061},
  year   = {2014}
}

Comments

9 pages, 6 figures