Infrared modified QCD couplings and Bjorken sum rule

被引：11
|
作者：
Khandramai, V. L. [1 ]
Teryaev, O. V. [2 ]
Gabdrakhmanov, I. R. [2 ]
机构：
[1] Tech Univ, Int Ctr Adv Studies, Gomel 246746, BELARUS
[2] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia
来源：
XVI WORKSHOP ON HIGH ENERGY SPIN PHYSICS (D-SPIN2015) | 2016年 / 678卷
关键词：
G(1)(P); PROTON;
D O I：
10.1088/1742-6596/678/1/012018
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We test the recently proposed "Massive" Perturbation Theory (MPT) for the description of the Gamma(p-n)(1) data at low momentum transfers. The MPT constructed on the two grounds: the first is pQCD with only one parameter added, an effective "glueball mass" m(p) less than or similar to M-gl less than or similar to 1 GeV; serving as an infrared "regulator"; the second stems out of the ghost-free Analytic Perturbation Theory comprising non-power perturbative expansion that makes it compatible with linear integral transformations. It is regular in the low-energy region and could serve as a practical means for the analysis of data below 1 GeV up to the IR-limit. We study the non-perturbative Bjorken sum rule higher twists correction by using the MPT, the integral representation for infinite sum of higher twists coefficients and the QCD-inspired model for the Q(2)-dependence of the generalized Gerasimov-Drell-Hearn sum rule.
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页数：4
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