English

Quark-Hadron Duality and $\gamma^* p \to \Delta$ Form Factors

High Energy Physics - Phenomenology 2014-11-17 v1

Abstract

We use local quark-hadron duality to estimate the purely nonperturbative soft contribution to the γpΔ\gamma^*p\to \Delta form factors. Our results are in agreement with existing experimental data. We predict that the ratio GE(Q2)/GM(Q2)G_E^*(Q^2)/G_M^*(Q^2) is small for all accessible Q2Q^2, in contrast to the pQCD expectations that GE(Q2)GM(Q2)G_E^*(Q^2)\to -G_M^*(Q^2).

Keywords

Cite

@article{arxiv.hep-ph/9507337,
  title  = {Quark-Hadron Duality and $\gamma^* p \to \Delta$ Form Factors},
  author = {V. M. Belyaev and A. V. Radyushkin},
  journal= {arXiv preprint arXiv:hep-ph/9507337},
  year   = {2014}
}

Comments

15 pages, LaTeX + 4 PS-figures enclosed in one uuencoded, compressed file