RT Journal Article
T1 Matching the 2HDM to the HEFT and the SMEFT: Decoupling and perturbativity
A1 Dawson, Sally
A1 Fontes, Duarte
A1 Quezada Calonge, Carlos Ariel
A1 Sanz Cillero, Juan José
AB We consider the 2 Higgs doublet model (2HDM) and compare two effective field theory (EFT) approaches to it, according to whether the heavy degrees of freedom are integrated out before [standard model EFT (SMEFT)] or after [Higgs EFT (HEFT)] spontaneous symmetry breaking. By requiring decoupling and perturbativity in the 2HDM, we define a consistent EFT expansion in inverse powers of the heavy masses which is applied to both the SMEFT and the HEFT tree-level matchings to the 2HDM. We organize this expansion with a dimensionless parameter ξ, and investigate the tree-level scatterings hh → hh and WW → hh up to Oðξ2Þ. We find no differences between the HEFT and the SMEFT approaches at this order. We show scenarios where even including dimension-8 operators of the SMEFT is insufficient to obtain an accurate matching to the 2HDM.
PB American Physical Society
SN 2470-0010
YR 2023
FD 2023-09-29
LK https://hdl.handle.net/20.500.14352/102611
UL https://hdl.handle.net/20.500.14352/102611
LA eng
NO 2023 Descuento SCOAP
NO United States Department of Energy
NO Ministerio de Economía y Competitividad (España)
NO Ministerio de Ciencia e Innovación (España)
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 9 abr 2025