New Physics models with either an elementary or composite origin are often associated with a similar imprint in a direct search at colliders, case in point being the production of a light pseudoscalar in association with a monochromatic photon from the decay of a Z boson at future $e+e-$ colliders. We exploit the correlation between the discovery of a signal in the Z decays and electroweak precision measurements as a tool to distinguish a composite model from an elementary scalar one. Our results offer an appealing and rich physics case for future colliders and demonstrate how a lepton collider at the Z mass can be a discovery machine for new physics in the Higgs sector.
Authors / Affiliations: mappings to Contributors and OrganizationsSee all Organizations.
- 1 Université de Lyon / University of Lyon
- 2 Institut de Physique des 2 Infinis de Lyon / Institute of Physics of the 2 Infinities of Lyon [IP2I]
- 3 भारतीय प्रौद्योगिकी संस्थान दिल्ली / Indian Institute of Technology Delhi [IITD]
- 4 Université Paris-Saclay / University of Paris-Saclay