Abstract
A general set of dispersion sum rules is considered for the pion form factor G( t) in the mixed-modulus phase representation. The connection between the distribution of the G( t) complex zeros and the sizes of dispersion integrals along the cut is stated. Under the assumption that G( t) ∼ t α at large t the following restriction on the asymptotic behaviour of G( t) is obtained: | G( t)| ⩾ at −2 ( a>0). Using present experimental data we evaluate the electromagnetic mean squared radius, r π = 0.71 ± 0.30 fm.
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.
