Gauge-independent (MS)over-bar renormalization in the 2HDM
Please always quote using this URN: urn:nbn:de:bvb:20-opus-166402
- We present a consistent renormalization scheme for the CP-conserving Two-Higgs-Doublet Model based on (MS)over-bar renormalization of the mixing angles and the soft-Z 2-symmetry-breaking scale M sb in the Higgs sector. This scheme requires to treat tadpoles fully consistently in all steps of the calculation in order to provide gauge-independent S-matrix elements. We show how bare physical parameters have to be defined and verify the gauge independence of physical quantities by explicit calculations in a general R ξ -gauge. The procedure isWe present a consistent renormalization scheme for the CP-conserving Two-Higgs-Doublet Model based on (MS)over-bar renormalization of the mixing angles and the soft-Z 2-symmetry-breaking scale M sb in the Higgs sector. This scheme requires to treat tadpoles fully consistently in all steps of the calculation in order to provide gauge-independent S-matrix elements. We show how bare physical parameters have to be defined and verify the gauge independence of physical quantities by explicit calculations in a general R ξ -gauge. The procedure is straightforward and applicable to other models with extended Higgs sectors. In contrast to the proposed scheme, the (MS)over-bar renormalization of the mixing angles combined with popular on-shell renormalization schemes gives rise to gauge-dependent results already at the one-loop level. We present explicit results for electroweak NLO corrections to selected processes in the appropriately renormalized Two-Higgs-Doublet Model and in particular discuss their scale dependence.…
Author: | Ansgar Denner, Laura Jenniches, Jean-Nicolas Lang, Christian Sturm |
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URN: | urn:nbn:de:bvb:20-opus-166402 |
Document Type: | Journal article |
Faculties: | Fakultät für Physik und Astronomie / Institut für Theoretische Physik und Astrophysik |
Language: | English |
Parent Title (English): | Journal of High Energy Physics |
Year of Completion: | 2016 |
Volume: | 09 |
Issue: | 115 |
Source: | Journal of High Energy Physics 09 (2016) 115. doi:10.1007/JHEP09(2016)115 |
DOI: | https://doi.org/10.1007/JHEP09(2016)115 |
ArXiv Id: | http://arxiv.org/abs/1607.07352 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Tag: | NLO Computations |
Release Date: | 2019/07/10 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |