English

Structure of renormalization constants for theories with multiple couplings in the MS-like subtraction schemes

High Energy Physics - Theory 2025-12-17 v2 High Energy Physics - Phenomenology

Abstract

For theories with multiple couplings we construct simple expressions for the four-dimensional (or, in general, integer-dimensional) renormalization constants assuming that all divergences are logarithmical. These expressions allow relating all coefficients at ε\varepsilon-poles, logarithms, and (if exist) mixed terms to the coefficients of the renormalization group functions in any order of the perturbation theory for MS-like renormalization prescriptions. The result admits such a formulation in that ε\varepsilon-poles and lnΛ/μ\ln\Lambda/\mu enter on the same footing. For theories with two and three couplings we present explicit expressions for the pole/logarithm structure of renormalization constants in the lowest orders of the perturbation theory. They are verified by comparisons with the two-loop explicit calculation for N=1{\cal N}=1 SQCD+SQED and also with the previously known three-loop calculations for the φ4\varphi^4-theory with two couplings.

Keywords

Cite

@article{arxiv.2509.03437,
  title  = {Structure of renormalization constants for theories with multiple couplings in the MS-like subtraction schemes},
  author = {Gleb Kovyrshin and Nikolai Meshcheriakov and Victoria Shatalova and Konstantin Stepanyantz},
  journal= {arXiv preprint arXiv:2509.03437},
  year   = {2025}
}

Comments

27 pages, 1 figure, the version accepted for publication in Nuclear Physics B