Dispersion Relation Analyses of Pion Form Factor, Chiral Perturbation Theory and Unitarized Calculations - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2000

Dispersion Relation Analyses of Pion Form Factor, Chiral Perturbation Theory and Unitarized Calculations

Résumé

The Vector Pion form factor below 1 GeV is analyzed using experimental data on its modulus, the P-wave pion pion phase shifts and dispersion relation. It is found that causality is satisfied. Using dispersion relation, terms proportional to s squared and s cubed are calculated using the experimental data, where s is the momentum transfer. They are much larger than the one-loop and two-loop Chiral Perturbation Theory calculations. Unitarized model calculations agree very well with dispersion relation results.

Dates et versions

hal-00104549 , version 1 (06-10-2006)

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Tran N. Truong. Dispersion Relation Analyses of Pion Form Factor, Chiral Perturbation Theory and Unitarized Calculations. 2000. ⟨hal-00104549⟩
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