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hep-ph2000
Remarks on the Calculation of the Enhancement Factor in the K -> 2 pion Decay
Tran N. Truong
The problem of calculation of the enhancement factor due to the strong pion final state interaction is reexamined in the light of recent interest in understanding of the origine of…
hep-ph2000
When is it possible to use perturbation technique in field theory ?
Tran N. Truong
The vector pion form factor is used as an example to analyze this question. Given the experimental radius of the pion, the crucial question is whether perturbative methods could be…
hep-ph2000
Dispersion Relation Analyses of Pion Form Factor, Chiral Perturbation Theory and Unitarized Calculations
Tran N. Truong
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…