Top-Higgs Associated Production involving \boldmath A⁰, H⁰ with Mass at 300 GeV

2019/10/17 by George W. S. Hou, Hou, George W. -S.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.1910.08002

openalex publication_date 2019/10/17 · openalex created_date 2019/10/25 · openalex updated_date 2026/07/28

Abstract

We advocate two Higgs doublet model without Z₂ symmetry, and focus on the extra top Yukawa couplings ρ_tt and ρ_tc. We show that A⁰ and H⁰ bosons are still allowed at 300 GeV mass, where cg → tA⁰, tH⁰ can lead to tt c same-sign top, or top-assisted di-Higgs th⁰h⁰ signatures, resp. As bonus material, we explore the constraint provided by current 4-top search, but advocate direct search for triple-top generated by cg → tH⁰/A⁰ → tt t for H⁰, A⁰ above t t threshold, and offer some insight on the mild but intriguing "excess" found by CMS in gg → A⁰ → t t at 400 GeV.

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