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|Title:||Polarized Bjorken Sum Rule Analysis: Revised|
|Authors:||Khandramai, V. L.|
Solovtsova, O. P.
Teryaev, O. V.
|Keywords:||ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика|
|Publisher:||Minsk : Education and Upbringing|
|Citation:||Nonlinear Phenomena in Complex Systems. - 2013. - Vol. 16, N 1. - P. 93-98|
|Abstract:||We present progress in the QCD analysis of the Bjorken sum rule at low momentum transfers. We study asymptotic structure of the perturbative QCD expansion at low Q2 scales based on analysis of recent accurate data on the Bjorken sum rule and available now four-loop expression for the coefficient-function CBj(Q2). We demonstrate that the standard perturbative series for CBj(Q2) gives a hint to its asymptotic nature manifesting itself in the region Q2. 1 GeV2. It is confirmed by the considered integral model for the perturbative QCD correction. We extract a value of higher-twist µ4coefficient and study the interplay between higher orders and higher-twist contributions. Results of other approaches to the description of Bjorken sum rule data are discussed.|
|Appears in Collections:||2013. Volume 16. Number 1|
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