arXiv:1102.5558·v1·Nuclear Theory
Pion form factors
Mikhail Gorchtein🇺🇸 · Peng Guo🇺🇸 · Adam P. Szczepaniak🇺🇸
Abstract
We consider the electromagnetic and transition pion form factors. Using dispersion relations we simultaneously describe both the hadronic, time-like region and the asymptotic region of large energy-momentum transfer. For the latter we propose a novel mechanism of Regge fermion exchange. We find that hadronic contributions dominate form factors at all currently available energies.
Comments: 4 pages, 3 figures