English

Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order $O(\alpha^4_s)$

High Energy Physics - Phenomenology 2022-06-28 v1
Authors: K. , G. Chetyrkin
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Abstract

We compute the nonsinglet Adler DD-function and the coefficient function for Bjorken polarized sum rules SBjpS^{Bjp} at order O(αs4)O(\alpha_s^4) in an extended QCD model with arbitrary number of fermion representations. The Crewther-Broadhurst-Kataev (CBK) relation in this order is confirmed.

Keywords

adler function bjorken sum rule crewther-broadhurst-kataev relation qcd fermion representations perturbative qcd

Cite

@article{arxiv.2206.12948,
  title  = {Adler function, Bjorken Sum Rule and Crewther-Broadhurst-Kataev relation with generic fermion representations at order $O(\alpha^4_s)$},
  author = {K. and G. Chetyrkin},
  journal= {arXiv preprint arXiv:2206.12948},
  year   = {2022}
}

Comments

14 pages, 1 figure

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