Signatures of HyperCharge Axions in Colliders

Abstract

If in addition to the standard model fields, a new pseudoscalar field that couples to hypercharge topological number density, the hypercharge axion, exists, it can be produced in colliders in association with photons or Z bosons, and detected by looking for its decay into photons or Z's. For a range of masses below a TeV and coupling above a fraction of 1/TeV, existing data from LEP II and the Tevatron can already put interesting constraints, and in future colliders accessible detection range is increased significantly. The hypercharge axion can help in explaining the matter-antimatter asymmetry in the universe.

11 pages, 8 figures, uses axodraw.sty

References in corpus (1)

• Multi-photon production in e+e- collisions at sqrt(s)= 189 geV

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• 750 GeV Composite Axion as the LHC Diphoton Resonance
• Hypercharge Axion and the Diphoton $750$ GeV Resonance
• The 750 GeV Diphoton excess, Dark Matter and Constraints from the IceCube experiment
• Candidates for HyperCharge Axion in Extensions of the Standard Model
• Signatures of HyperCharge Axions at Contemporary and Future Colliders