Probing Variant Axion Models at LHC

Abstract

We study collider implications of variant axion models which naturally avoid the cosmological domain wall problem. We find that in such models the branching ratio of $h\to \gamma \gamma$ can be enhanced by a factor of 5 up to 30 as compared with the standard model prediction. The $h\to \gamma \gamma$ process is therefore a promising channel to discover a light Higgs boson at the LHC and to probe the Peccei-Quinn charge assignment of the standard model fields from Yukawa interactions.

16 pages, 4 figures

References in corpus (2)

• A SQUID-based microwave cavity search for dark-matter axions
• Search for a Fermiophobic Higgs Boson Decaying into Diphotons in p p-bar Collisions at sqrt{s} = 1.96 TeV

Cited by in corpus (9)

• Axions : Theory and Cosmological Role
• The Low-Energy Effective Theory of Axions and ALPs
• Evolution of String-Wall Networks and Axionic Domain Wall Problem
• LHC Higgs Production and Decay in the T' Model
• Current Status of Top-Specific Variant Axion Model
• Peccei-Quinn axions from frequency dependence radiation dimming
• Muon g-2 and rare top decays in up-type specific variant axion models
• Classification of three-family flavoured DFSZ axion models that have no domain wall problem
• Probing chirality structure in lepton-flavour-violating Higgs decay $h\to \tau \mu$ at the LHC