The Vector and Scalar Form Factors of the Pion to Two Loops

@inproceedings{Bijnens1998TheVA,
  title={The Vector and Scalar Form Factors of the Pion to Two Loops},
  author={Johan Bijnens},
  year={1998}
}
We calculate the vector and scalar form factors of the pion to two loops in Chiral Perturbation Theory. We estimate the unknownO(p6) constants using resonance exchange. We make a careful comparison to the available data and determine twoO(p4) constants rather precisely, and two O(p6) constants less precisely. We also use Chiral Perturbation Theory to two loops to extract in a model–independent manner the charge radius of the pion from the available data, and obtain 〈r〉V = 0.437± 0.016 fm. 
Highly Cited
This paper has 17 citations. REVIEW CITATIONS