Two-loop electroweak threshold corrections to the bottom and top Yukawa couplings
From MaRDI portal
Publication:748676
DOI10.1016/J.NUCLPHYSB.2014.05.029zbMath1323.81119arXiv1401.1844OpenAlexW1986815868MaRDI QIDQ748676
Oleg L. Veretin, Bernd A. Kniehl
Publication date: 29 October 2015
Published in: Unnamed Author (Search for Journal in Brave)
Abstract: We study the relationship between the $overline{mathrm{MS}}$ Yukawa coupling and the pole mass for the bottom and top quarks at the two-loop electroweak order ${cal O}(alpha^2)$ in the gaugeless limit of the standard model. We also consider the $overline{mathrm{MS}}$ to pole mass relationships at this order, which include tadpole contributions to ensure the gauge independence of the $overline{mathrm{MS}}$ masses. In order to suppress numerically large tadpole contributions, we propose a redefinition of the running heavy-quark mass in terms of the $overline{mathrm{MS}}$ Yukawa coupling. We also present $Delta r$ in the $overline{mathrm{MS}}$ scheme at ${cal O}(alpha^2)$ in the gaugeless limit. As an aside, we also list the exact two-loop expression for the mass counterterms of the bottom and top quarks.
Full work available at URL: https://arxiv.org/abs/1401.1844
Unified quantum theories (81V22) Nuclear physics (81V35) Perturbative methods of renormalization applied to problems in quantum field theory (81T15) Feynman diagrams (81T18)
Cites Work
- Unnamed Item
- The four-loop QCD \(\beta\)-function and anomalous dimensions
- ON-SHELL2: FORM based package for the calculation of two-loop self-energy single scale Feynman diagrams occurring in the Standard Model
- \(\overline{MS}\) vs. pole masses of gauge bosons. II: Two-loop electroweak fermion corrections
- On the difference between the pole and the \(\bar{\mathrm{MS}}\) masses of the top quark at the electroweak scale
- Higgs self-coupling beta-function in the Standard Model at three loops
This page was built for publication: Two-loop electroweak threshold corrections to the bottom and top Yukawa couplings
