1998/09/08 by John F. Gunion, J. F. Gunion, Jacek Pliszka +1 · 2 citations
Physics and Astronomy · #Boson #CP violation #Coupling (piping) #Fermion #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #hep-ex #hep-ph
paper · pdf · doi:10.1016/s0370-2693(98)01364-1
published as Phys.Lett. B444 (1998) 136-141 · 12 pages
arxiv created 1998/09/08 · openalex publication_date 1998/12/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate that the relative size of the CP-even and CP-odd couplings of a Higgs boson to t\anti t can be determined at the LHC at a level that is very useful in discriminating between models, provided that a Higgs signal can be observed at a reasonable S/√ B level in the t\anti t\h (with \h→γγ or b\anti b) channels. In particular, the CP-even nature of a SM-like Higgs boson's coupling to t\anti t can be confirmed with very substantial statistical significance using the t\anti t \h (\h→ γγ) production/decay mode. The key to achieving good discrimination between models is to make full use of the difference in the final state distributions for different ratios of the CP-even to CP-odd couplings. For our analysis, we employ the very convenient and simple optimal analysis procedures derived previously.