Unitarity constraints on neutral pion electroproduction
High Energy Physics - Phenomenology
2011-06-27 v2
Abstract
At large virtuality , the coupling to the vector meson production channels provides us with a natural explanation of the surprisingly large cross section of the neutral pion electroproduction recently measured at Jefferson Laboratory, without destroying the good agreement between the Regge pole model and the data at the real photon point. Elastic rescattering of the provides us with a way to explain why the node, that appears at GeV at the real photon point, disappears as soon as differs from zero.
Cite
@article{arxiv.1004.1949,
title = {Unitarity constraints on neutral pion electroproduction},
author = {J. -M. Laget},
journal= {arXiv preprint arXiv:1004.1949},
year = {2011}
}
Comments
7 pages; 12 figures Figures 1, 2, 10, 11, 12 updated. Axial-tensor coupling, instead of axial-vector coupling, at the b1NN vertex