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arXiv · 0910.3604

Nonperturbative relativistic approach to pion form factor: predictions for future JLab experiments

A. F. Krutov·V. E. Troitsky·N. A. Tsirova
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Abstract

Some predictions concerning possible results of the future JLab experiments on the pion form factor F_pi(Q^2) are made. The calculations exploit the method proposed previously by the authors and based on the instant-form Poincare invariant approach to pion considered as a quark-antiquark system. Long ago, this model has predicted with surprising accuracy the values of F_pi(Q^2) measured later in JLab experiment. The results are almost independent from the form of wave function. The pion mean square radius and the decay constant f_pi also agree with experimental values. The model gives power-like asymptotic behavior of F_pi(Q^2) at high momentum transfer in agreement with QCD predictions.

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A. F. Krutov, V. E. Troitsky, N. A. Tsirova. 2009-12-09. Nonperturbative relativistic approach to pion form factor: predictions for future JLab experiments. https://doi.org/10.1103/physrevc.80.055210

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