Double logarithmic asymptotic behavior of~vertex functions in~quantum chromodynamics.~I
Teoretičeskaâ i matematičeskaâ fizika, Tome 44 (1980) no. 2, pp. 147-156

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The method of calculating the double logarithmic asymptotics of vertex functions suggested by the authors in [5] is further developed. Now the method is applied to calculating the asymptotics of quantum chromodynamics perturbation theory diagrams of arbitrary order including at most one three-gluon vertex. Cancellation of terms proportional to the Kasimir operator $B$ is demonstrated in every order for the singlet formfactor of the quark.
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     author = {V. V. Belokurov and N. I. Usyukina},
     title = {Double logarithmic asymptotic behavior of~vertex functions in~quantum {chromodynamics.~I}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {147--156},
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     url = {http://geodesic.mathdoc.fr/item/TMF_1980_44_2_a0/}
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V. V. Belokurov; N. I. Usyukina. Double logarithmic asymptotic behavior of~vertex functions in~quantum chromodynamics.~I. Teoretičeskaâ i matematičeskaâ fizika, Tome 44 (1980) no. 2, pp. 147-156. http://geodesic.mathdoc.fr/item/TMF_1980_44_2_a0/