2018/06/30 by W.-S. Hou, Wei-Shu Hou, Masaya Kohda +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Coupling (piping) #Electroweak interaction #Higgs boson #Large Hadron Collider #Luminosity #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Standard Model (mathematical formulation) #Yukawa potential #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.98.075007
published as Phys. Rev. D 98, 075007 (2018) · matches with the published version
openalex created_date 2018/06/21 · openalex publication_date 2018/10/11 · arxiv created 2018/10/14 · arxiv updated 2018/10/17 · openalex updated_date 2026/08/05
The observation of tth(125) production at the Large Hadron Collider (LHC) is the first direct measurement of the top Yukawa coupling. It opens the window on an extra top Yukawa coupling, \ensuremathρtt, from a second Higgs doublet, without a Z2 symmetry to forbid flavor changing neutral Higgs couplings. We show that tth and Higgs property measurements at the High Luminosity LHC can constrain the Re\ensuremathρtt--Im\ensuremathρtt parameter space that could drive electroweak baryogenesis, but the \mathrm\ensuremathΓh width measurement must be considerably improved beyond current projections.