Nonperturbative relativistic approach to pion form factors: Predictions for future JLab experiments
- Samara State University, RU-443011 Samara (Russian Federation)
- D. V. Skobeltsyn Institute of Nuclear Physics, Moscow State University, RU-119991 Moscow (Russian Federation)
Some predictions concerning possible results of the future experiments at the Thomas Jefferson National Accelerator Facility (JLab) on the pion form factor F{sub {pi}}(Q{sup 2}) are made. The calculations exploit the method proposed previously by the authors and based on the instant-form Poincare invariant approach to pions, considered as quark-antiquark systems. This model has predicted with surprising accuracy the values of F{sub {pi}}(Q{sup 2}), which were measured later in JLab experiments. The results are almost independent from the form of wave function. The pion mean square radius <r{sub {pi}}{sup 2}> and the decay constant f{sub {pi}} also agree with experimental values. The model gives powerlike asymptotic behavior of F{sub {pi}}(Q{sup 2}) at high momentum transfer in agreement with QCD predictions.
- OSTI ID:
- 21296537
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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