Phenomenological Analysis for the Electromagnetic Form Factor of the Pion
Abstract
Using the results from electron-positron colliding-beam experiments, a phenomenological analysis has been made by means of the continuous-dispersion sum rules for the pion electromagnetic form factor. Results such as Γρ=0.110 GeV, a1(ππ)=0.028μ-2, |Fπ(mρ2)|2=48.8, rπ=0.62 F, δμ (the pion mass difference)=4.3 MeV have been obtained, and sum rules involving amplitudes accessible to e+e--->π+π- and πe-->πe processes tested.
- Publication:
-
Physical Review D
- Pub Date:
- June 1971
- DOI:
- 10.1103/PhysRevD.3.2906
- Bibcode:
- 1971PhRvD...3.2906L