Search for pseudoscalar Higgs boson A₀ of the Bestest Little Higgs model at the LHC and FCC-hh

2025/06/30 by Cervantes-Baltazar, Y., Cruz-Albaro, E., Gutiérrez-Rodríguez, A. +2
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2506.23500

Abstract

We analyse the sensitivity of the Large Hadron Collider (LHC) and the Future Circular Collider-hadron-hadron (FCC-hh) to the existence of pseudoscalar Higgs boson A₀ predicted by the Bestest Little Higgs model. We study the tree-level (two and three body) and one-loop decays of the pseudoscalar, A₀ → b b, t t, γt t, γb b, Zt t, Zb b, Wt b, h₀ t t, h₀ b b, and A₀ → γγ, γZ, ZZ, gg, WW, respectively. In addition, we perform a phenomenological study of the production of the pseudoscalar A₀ via gluon fusion gg → A₀ → Y processes, where Y ≡ γγ, γZ, ZZ, gg, WW. From the cross section of the processes of interest and the expected integrated luminosity of the LHC and FCC-hh, we determined the number of events that could be produced in both colliders.

Citations

• Pseudoscalar Higgs Production at Muon Colliders: The Role of One-Loop Effective Vertices
• New physics search with the new gauge boson Z' of the bestest little Higgs model at the muon collider

Related

• Probing the light charged Higgs boson, pseudoscalar Higgs boson, and Z^′ boson in the U(1)_F model at the LHC
• Search for light pseudoscalar bosons, pair-produced in Higgs boson decays in the four-electron final state in proton-proton collisions at √(s) = 13 TeV
• Associated production of A⁰ and Z⁰ bosons and Rare Pseudoscalar Higgs Decays
• Little Higgs Model Discrimination at the LHC and ILC
• Probing the heavy Higgs boson production and decay H₀ of the Bestest Little Higgs Model at the LHC and the FCC-hh