Signatures of hypercharge axions in colliders Academic Article uri icon


  • 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 1 TeV and coupling above a fraction of 1/TeV, existing data from CERN LEP II and the Fermilab Tevatron can already achieve interesting constraints, and in future colliders the accessible detection range will be increased significantly. The hypercharge axion can help in explaining the matter-antimatter asymmetry in the universe.

publication date

  • January 1, 2000