Infrared Modified QCD Couplings and Bjorken Sum Rule

Khandramai, V. L.; Teryaev, О. V.; Gabdrakhmanov, I. R.

Infrared Modified QCD Couplings and Bjorken Sum Rule

Khandramai, V. L., Teryaev, О. V., Gabdrakhmanov, I. R.

Дата публикации: 2015

Дата публикации в реестре: 2023-04-03T14:10:45Z

Аннотация:

We test the recently proposed «Massive» Perturbation Theory (MPT) for the description of the г1p-n 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» mp<-Mg1<- 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 Q2 -dependence of the generalized Gerasimov-Drell- Heam sum rule.

Ключевые слова:
Bjorken sum rule, Low momentum transfers, «Massive» Perturbation Theory, Perturbative QCD

Тип: Article