Geodesic
Asymptotic behavior of the pion electromagnetic form factor in a scale-invariant quark model
Teoretičeskaâ i matematičeskaâ fizika, Tome 30 (1977) no. 2, pp. 168-182 Cet article a éte moissonné depuis la source Math-Net.Ru

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Consistent relativistic approach is proposed to the investigation of asymptotic behaviour of form-factor of a system composed of two spinor particles, interacting with the vector or (pseudo) scalar neutral field. It is shown that the assumption of finite and small asymptotical value of the quark-gluon interaction invariant charge $(g_0^2\ll 1)$ leads to the “quark counting rules” in the parton region $(g_0^2\, \ln\, (-q^2)\ll 1)$ and to thereaking of these rules at greater $-q^2$ values. 
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     title = {Asymptotic behavior of~the pion electromagnetic form factor in a~scale-invariant quark model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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A. V. Efremov; A. V. Radyushkin. Asymptotic behavior of the pion electromagnetic form factor in a scale-invariant quark model. Teoretičeskaâ i matematičeskaâ fizika, Tome 30 (1977) no. 2, pp. 168-182. http://geodesic.mathdoc.fr/item/TMF_1977_30_2_a2/

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