2017/07/31 by Siddhartha Karmakar, Subhendu Rakshit · 13 citations
Computer Science · Physics and Astronomy · #Basis (linear algebra) #Boson #Computational Physics and Python Applications #Effective field theory #Higgs boson #Neutrino Physics Research #Parameter space #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Standard Model (mathematical formulation) #hep-ph #hep-th
paper · pdf · doi:10.1007/jhep10(2017)048
published in Journal of High Energy Physics 2017(10) (Springer Nature) · 34 pages, 6 figures; to appear in JHEP
openalex created_date 2017/07/14 · arxiv created 2017/09/22 · openalex publication_date 2017/10/01 · arxiv updated 2017/10/25 · openalex updated_date 2026/08/05
We present a complete (non-redundant) basis of CP- and flavour-conserving six-dimensional operators in a two Higgs doublet model (2HDM). We include ℤ2 -violating operators as well. In such a 2HDM effective field theory (2HDMEFT), we estimate how constraining the 2HDM parameter space from experiments can get disturbed due to these operators. Our basis is motivated by the strongly interacting light Higgs (SILH) basis used in the standard model effective field theory (SMEFT). We find out bounds on combinations of Wilson coefficients of such operators from precision observables, signal strengths of Higgs decaying into vector bosons etc. In 2HDMEFT, the 2HDM parameter space can play a significant role while deriving such constraints, by leading to reduced or even enhanced effects compared to SMEFT in certain processes. We also comment on the implications of the SILH suppressions in such considerations.