Symmetries and renormalisation in two-Higgs-doublet models

• Verfasst von: Maniatis, Markos [VerfasserIn]
• Verfasst von: Nachtmann, Otto [VerfasserIn]
• Titel: Symmetries and renormalisation in two-Higgs-doublet models
• Verf.angabe: M. Maniatis, O. Nachtmann
• E-Jahr: 2011
• Jahr: 30 December 2011
• Umfang: 25 S.
• Fussnoten: Gesehen am 09.08.2022
• Titel Quelle: Enthalten in: Journal of high energy physics
• Ort Quelle: Berlin : Springer, 1997
• Jahr Quelle: 2011
• Band/Heft Quelle: (2011), 11, Artikel-ID 151, Seite 1-25
• ISSN Quelle: 1029-8479
• DOI: doi:10.1007/JHEP11(2011)151
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Beyond Standard Model
• Sach-SW: Global Symmetries
• Sach-SW: Renormalization Group
• K10plus-PPN: 1813801916

Abstract

We discuss the classification of symmetries and the corresponding symmetry groups in the two-Higgs-doublet model (THDM). We give an easily useable method how to determine the symmetry class and corresponding symmetry group of a given THDM Higgs potential. One of the symmetry classes corresponds to a Higgs potential with several simultaneous generalised CP symmetries. Extending the CP symmetry of this class to the Yukawa sector in a straightforward way, the so-called maximally-CP-symmetric model (MCPM) is obtained. We study the evolution of the quartic Higgs-potential parameters under a change of renormalisation point. Finally we compute the so called oblique parameters S, T , and U , in the MCPM and we identify large regions of viable parameter space with respect to electroweak precision measurements. We present the corresponding allowed regions for the masses of the physical Higgs bosons. Reasonable ranges for these masses, up to several hundred GeV, are obtained which should make the (extra) Higgs bosons detectable in LHC experiments.