https://doi.org/10.1140/epjc/s10052-024-12561-8
Regular Article - Theoretical Physics
New symmetries of the two-Higgs-doublet model
1
Instituto Superior de Engenharia de Lisboa, Lisbon, Portugal
2
Centro de Física Teórica e Computacional, Universidade de Lisboa, Lisbon, Portugal
3
Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland
4
Western Norway University of Applied Sciences, Postboks 7030, 5020, Bergen, Norway
5
Department of Physics and Technology, University of Bergen, Postboks 7803, 5020, Bergen, Norway
Received:
4
December
2023
Accepted:
14
February
2024
Published online:
6
March
2024
The Two Higgs Doublet Model invariant under the gauge group is known to have six additional global discrete or continuous symmetries of its scalar sector. We have discovered regions of parameter space of the model which are basis and renormalization group invariant to all orders of perturbation theory in the scalar and gauge sectors, but correspond to none of the hitherto considered symmetries. We therefore identify seven new symmetries of the model and discuss their phenomenology. Soft symmetry breaking is required for some of these models so that electroweak symmetry breaking can occur. We show that, at least at the two-loop level, it is possible to extend some of these symmetries to include fermions.
© The Author(s) 2024
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