Abstract
The asymptotic behavior of electromagnetic form factors is examined for bound states treated by means of the Bethe-Salpeter equation in the ladder approximation. Results are found which depend on the behavior of the interaction at small distances, and the models examined are accordingly divided into regular and singular cases. For spin-0 and spin-\textonehalf{} bound states with regular interaction, the form factors go to zero as ${(\frac{1}{{q}^{2}})}^{2}$ (apart from logarithmic factors). For singular cases (e.g., a spinless $N\ensuremath{-}\overline{N}$ bound state) it is shown that the asymptotic behavior is worse and depends on the strength of the interaction. In all cases a behavior more convergent than $\frac{1}{{q}^{2}}$ seems to occur, and to be related to the compositeness of the system rather than to the structure of the interaction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
