Pion Form Factor: Transition From Soft To Hard QCD

Abstract

We have reexamined the elastic pion form factor over a broad range of momentum transfers with the mass evolution from current quark to constituent quark being taken into account. We have also studied the effect of Sudakov form factors, of anomalous quark magnetic moments and of alternative soft wave functions. Our calculation shows a power-law falloff from the present experimental values to near-asymptotic values in the few $Ge{V}^2$ range.

arXiv comment13 pages. 3 figures in PS file are available upon request from authors