arXiv:2506.22153·v2·High Energy Physics — Phenomenology
Space-like pion off-shell form factors in the Bethe-Salpeter approach
S. Bondarenko (1,2)🇷🇺 · M. Slautin (1,2) ((1) Joint Institute for Nuclear Research, Dubna, Russia, (2) Dubna State University, Dubna, Russia)🇷🇺
Abstract
In the paper, the off-shell electromagnetic pion form factors in the Bethe-Salpeter formalism are considered. The separable kernel of the first rank quark-antiquark interaction is used to solve the equation analytically. The semi-off-shell pion form factors \( F_1 \) and \( F_2 \), which are related to each other by the Ward-Takahashi identity, are calculated. The obtained off-shell form factors as well as static properties of the pion are compared with the results of other authors.
Comments: 8 pages, 3 figures, 1 table