arXiv:hep-ph/0210306·v2·High Energy Physics — Phenomenology
Process gamma* gamma -> sigma at large virtuality of gamma*
M. K. Volkov🇷🇺 · A. E. Radzhabov🇷🇺 · V. L. Yudichev🇷🇺
Abstract
The process gamma* gamma -> sigma is investigated in the framework of the SU(2)xSU(2) chiral NJL model. The form factor of the process is derived for arbitrary virtuality of gamma* in the Euclidean kinematic domain. The asymptotic behaviour of this form factor resembles the asymptotic behaviour of the gamma* gamma -> pi form factor.
Comments: 11 pages, 2 figures; added references