7 papers · 1 filter
Note on an application of the method of uniqueness to reduced quantum electrodynamics
A. V. Kotikov, S. Teber
Using the method of uniqueness a two-loop massless propagator Feynman diagram with a non-integer index on the central line is evaluated in a very transparent way. The result is app…
Perturbative QCD analysis of the Bjorken sum rule
A. V. Kotikov, B. G. Shaikhatdenov
We study the polarized Bjorken sum rule at low momentum transfer squared Q2<3GeV2 in the twist-two approximation and to the next-to-next-to-leading order accuracy.
Small x behavior of parton distributions. Analytical and "frozen" coupling constants. BFKL corrections
A. V. Kotikov
It is shown that in the leading twist approximation of the Wilson operator product expansion with "frozen" and analytic strong coupling constants, Bessel-inspired behavior of the s…
Gluon- and Quark-Jet Multiplicities with NNNLO and NNLL Accuracy
P. Bolzoni, B. A. Kniehl, A. V. Kotikov
We present a new approach to consider and include both the perturbative and the non-perturbative contributions to the multiplicities of gluon and quark jets. Thanks to this new met…
Ultrahigh-energy neutrino-nucleon deep-inelastic scattering and the Froissart bound
Alexey Yu. Illarionov, Bernd A. Kniehl, Anatoly V. Kotikov
We present a simple formula for the total cross section sigma^{nu N} of neutral- and charged-current deep-inelastic scattering of ultrahigh-energy neutrinos on isoscalar nuclear ta…
About QCD coupling constant at NNLO from DIS data
A. V. Kotikov, V. G. Krivokhizhin, B. G. Shaikhatdenov +1
We give a brief review of our recent QCD analysis carried out over the deep inelastic scattering data on F2 structure function and in the non-singlet approximation to the accuracy…