BSM Higgs Physics at the LHC in the Forward Proton Mode

TL;DR

This paper reviews the potential of forward proton detectors at the LHC to study Higgs bosons, especially their CP properties, through Central Exclusive Diffractive production, including scenarios with a fourth fermion generation.

Contribution

It introduces the use of forward proton detectors at 220m and 420m for detailed Higgs boson analysis, emphasizing CP property determination in the SM with a fourth fermion generation.

Findings

Forward proton mode can determine Higgs CP properties.

Enhanced Higgs detection prospects with fourth-generation fermions.

Critical for understanding Higgs spin-parity at the LHC.

Abstract

We review the prospects for Central Exclusive Diffractive (CED) production of Higgs bosons in the SM with a fourth generation of fermions at the LHC using forward proton detectors installed at 220m and 420m distance around ATLAS and / or CMS. We discuss the determination of Higgs spin-parity and coupling structures at the LHC and show that the forward proton mode would provide a critical information on the CP properties of the Higgs bosons.