Heavy bosons in the secluded model at hadron colliders

Area of Science:

• High-energy particle physics
• Supersymmetry phenomenology
• Collider physics

Background:

• Investigating physics beyond the Standard Model (BSM) at hadron colliders.
• Exploring extensions to the Minimal Supersymmetric Standard Model (MSSM) to address electroweak scale challenges.
• Focusing on a secluded sector model incorporating singlet superfields to resolve mass discrepancies for heavy particles.

Purpose of the Study:

• Analyze the production and decay of a heavy Z boson (Z′) within an extended MSSM framework.
• Assess the discovery potential of this Z′ boson at various future hadron collider energies.
• Develop specific benchmark scenarios for potential observation.

Main Methods:

• Detailed simulation of Z′ boson production and subsequent decays, including into supersymmetric particles.
• Consideration of three distinct scenarios consistent with experimental data and relic density constraints.
• Analysis of final states involving specific particles and inclusion of Standard Model backgrounds.

Main Results:

• Discovery of the Z′ boson is deemed unpromising at the High-Luminosity LHC (HL-LHC) at 14 TeV.
• The discovery outlook is more optimistic for future colliders operating at 27 TeV and 100 TeV.
• Specific benchmark scenarios for potential observation at higher energies have been devised.

Conclusions:

• The HL-LHC may not be sufficient for discovering the Z′ boson within this specific extended MSSM.
• Future, higher-energy colliders offer a more viable avenue for Z′ boson detection.
• The proposed benchmark scenarios provide concrete targets for future experimental searches.