Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order O(αs4)

We compute the nonsinglet Adler D-function and the coefficient function for Bjorken polarized sum rules SBjp at order O(αs4) in an extended QCD model with arbitrary number of fermion representations. The Crewther-Broadhurst-Kataev (CBK) relation in this order is confirmed.

Bibliographic Details
Main Author: K.G. Chetyrkin
Format: Article
Language:English
Published: Elsevier 2022-12-01
Series:Nuclear Physics B
Online Access:http://www.sciencedirect.com/science/article/pii/S055032132200339X
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author K.G. Chetyrkin
author_facet K.G. Chetyrkin
author_sort K.G. Chetyrkin
collection DOAJ
description We compute the nonsinglet Adler D-function and the coefficient function for Bjorken polarized sum rules SBjp at order O(αs4) in an extended QCD model with arbitrary number of fermion representations. The Crewther-Broadhurst-Kataev (CBK) relation in this order is confirmed.
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spelling doaj.art-57371e9c9ff948168d99a3ab52ca32c12022-12-22T02:57:28ZengElsevierNuclear Physics B0550-32132022-12-01985115988Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order O(αs4)K.G. Chetyrkin0Institut für Theoretische Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, GermanyWe compute the nonsinglet Adler D-function and the coefficient function for Bjorken polarized sum rules SBjp at order O(αs4) in an extended QCD model with arbitrary number of fermion representations. The Crewther-Broadhurst-Kataev (CBK) relation in this order is confirmed.http://www.sciencedirect.com/science/article/pii/S055032132200339X
spellingShingle K.G. Chetyrkin
Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order O(αs4)
Nuclear Physics B
title Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order O(αs4)
title_full Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order O(αs4)
title_fullStr Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order O(αs4)
title_full_unstemmed Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order O(αs4)
title_short Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order O(αs4)
title_sort adler function bjorken sum rule and crewther broadhurst kataev relation with generic fermion representations at order o αs4
url http://www.sciencedirect.com/science/article/pii/S055032132200339X
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