2021/12/31 by Sayan Dasgupta, Rohan Pramanick, Tirtha Sankar Ray
Physics and Astronomy · #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Pseudoscalar #Quantum Chromodynamics and Particle Interactions #Quark #hep-ph
paper · pdf · doi:10.1103/physrevd.105.035032
published as Phys. Rev. D 105, 035032 (2022) · 22 pages, 9 captioned figures; title slightly changed; minor changes in text; new appendix; matches published version
openalex publication_date 2022/02/25 · arxiv created 2022/02/26 · arxiv updated 2022/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Top like vector quarks arising from underlying strong sectors are expected to have large decay widths pushing them beyond the narrow width approximation. In this paper we consider a broad colored vector quark that strongly couples to an exotic pseudoscalar. We use the full 1PI resummed propagator for the exotic quark to recast the present LHC constraints ruling out masses below ∼1.2~(1.1) TeV for width to mass ratio of 0.1~(0.6). We utilize machine learning techniques that are demonstratively more efficient than traditional cut based searches to present the reach of HL-LHC on the parameter space of this broad resonance. We find that at 3~ab-1 the HL-LHC has a discovery potential up to 1.6 TeV dominated by the pair production channel. We study the feasibility of using machine learning techniques to analyze the broad resonance peaks expected from these exotic quarks at collider experiments like the LHC.