2003/05/12 by Ulrich Ellwanger, John F. Gunion, Ellwanger, Ulrich +5 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0305109
18 pages, 1 figure, 1 table, prepared for the LHC/LC Study Group Report
arxiv created 2003/05/12 · openalex publication_date 2003/05/12 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We scan the parameter space of the NMSSM for the observability of a Higgs boson at the LHC with 300 \rm fb-1 integrated luminosity per detector, taking the present LEP constraints into account. We focus on the regions of parameter space for which none of the usually considered LHC detection modes are viable due to the fact that the only light non-singlet (and, therefore, potentially visible) Higgs boson, h, decays mainly to two CP-odd light Higgs bosons, h→ a a. We simulate the WW→ h → aa detection mode. We find that this signal may be detectable at the LHC as a signal/background ∼ 600/600 bump in the tail of a rapidly falling mass distribution. If further study gives us confidence that the shape of the background tail is predictable, then we can conclude that NMSSM Higgs detection at the LHC will be possible throughout all of parameter space by combining this signal with the usual detection modes previously simulated by ATLAS and CMS. We also show that this WW→ h→ aa signal will be highly visible at the LC due to its cleaner environment and high luminosity. We present a study of the production modes and decay channels of interest at the LC.