Meson elastic and transition form factors

Details Meson elastic and transition form factors Meson elastic and transition form factors

2002-09-17

arxiv.org/abs/nucl-th/0209048v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, contribution to the JLab workshop Exclusive processes at high-t, May 2002

Scientific paper

The Dyson-Schwinger equations of QCD, truncated to ladder-rainbow level, are used to calculate meson form factors in impulse approximation. The infrared strength of the ladder-rainbow kernel is described by two parameters fitted to the chiral condensate and f_pi; the ultraviolet behavior is fixed by the QCD running coupling. This obtained elastic form factors F_pi(Q^2) and F_K(Q^2) agree well with the available data. We also calculate the rho to pi gamma and K* to K gamma transition form factors, which are useful for meson-exchange models.

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