2013/10/31 by Alejandro Celis, Victor Ilisie, Antonio Pich · 3 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Electroweak interaction #Higgs boson #Large Hadron Collider #Neutrino Physics Research #Parameter space #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Standard Model (mathematical formulation) #Tevatron #Yukawa potential #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep12(2013)095
published as JHEP 1312 (2013) 095 · 37 pages, 13 figures and 3 tables. Discussion improved and references added; new section comparing our results with those of related works. Matches version to be published in JHEP
openalex publication_date 2013/12/01 · arxiv created 2013/12/20 · arxiv updated 2013/12/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The data accumulated so far confirm the Higgs-like nature of the new boson discovered at the LHC. The Standard Model Higgs hypothesis is compatible with the collider results and no significant deviations from the Standard Model have been observed neither in the flavour sector nor in electroweak precision observables. We update the LHC and Tevatron constraints on CP-conserving two-Higgs-doublet models without tree-level flavour-changing neutral currents. While the relative sign between the top Yukawa and the gauge coupling of the 126 GeV Higgs is found be the same as in the SM, at 90% CL, there is a sign degeneracy in the determination of its bottom and tau Yukawa couplings. This results in several disjoint allowed regions in the parameter space. We show how generic sum rules governing the scalar couplings determine the properties of the additional Higgs bosons in the different allowed regions. The role of electroweak precision observables, low-energy flavour constraints and LHC searches for additional scalars to further restrict the available parameter space is also discussed.