2004/11/30 by Chung Kao, Shankar Sachithanandam · 10 citations
Physics and Astronomy · #Bottom quark #Cosmology and Gravitation Theories #Gauge (firearms) #Gluon #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Minimal Supersymmetric Standard Model #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Quark #Standard Model (mathematical formulation) #Top quark #hep-ph
paper · pdf · doi:10.1016/j.physletb.2005.06.016
published in Physics Letters B 620(1-2), 80-87 (Elsevier BV) · Version to appear in Physics Letters B
arxiv created 2005/06/08 · openalex publication_date 2005/06/20 · arxiv updated 2010/04/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the prospects of detecting a Higgs pseudoscalar (A0) in association with a Z gauge boson produced from bottom quark fusion (bb → ZA0) at the CERN Large Hadron Collider (LHC). A general two Higgs doublet model and the minimal supersymmetric standard model are adopted to study the discovery potential of pp → ZA0 → ℓ ℓ bb +X (ℓ = e, μ), via bb → ZA0 with physics backgrounds and realistic cuts. Promising results are found for mA \alt 400 GeV in a general two Higgs doublet model when the heavier Higgs scalar (H0) can decay into a Z boson and a Higgs pseudoscalar (H0 → ZA0). We compare the production rates from bottom quark fusion (bb → ZA0) and gluon fusion (gg → ZA0) and find that they are complementary processes to produce ZA0 in hadron collisions. While gluon fusion is the major source for producing a Higgs pseudoscalar associated with a Z boson at the LHC for tanβ\alt 10, bottom quark fusion can make dominant contributions for tanβ\agt 10.