Process gamma* gamma -> sigma at large virtuality of gamma*

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.

11 pages, 2 figures; added references

References in corpus (3)

• Scalar and pseudoscalar meson pole terms in the hadronic light-by-light contributions to $a_{\mu }^{had}$
• Ground and excited scalar isoscalar meson states in a U(3)xU(3) quark model with a glueball
• The Handbag Contribution to Two-Photon Annihilation Into Meson Pairs

Cited by in corpus (2)

• On the two-photon decay width of the sigma meson
• The role of the next-to-leading order triangle-shaped diagram in two-body hadronic decays