Gravitational wave, collider and dark matter signals from a scalar singlet electroweak baryogenesis
Ankit Beniwal (ARC Centre of Excellence for Particle Physics at the Terascale (CoEPP) & CSSM, Department of Physics, University of Adelaide, South Australia, 5005, Adelaide, Australia); Marek Lewicki (Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093, Warsaw, Poland, ARC Centre of Excellence for Particle Physics at the Terascale (CoEPP) & CSSM, Department of Physics, University of Adelaide, South Australia, 5005, Adelaide, Australia); James Wells (Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, D-22607, Hamburg, Germany, Michigan Center for Theoretical Physics, University of Michigan, Ann Arbor, MI, 48109, U.S.A.); Martin White (ARC Centre of Excellence for Particle Physics at the Terascale (CoEPP) & CSSM, Department of Physics, University of Adelaide, South Australia, 5005, Adelaide, Australia); Anthony Williams (ARC Centre of Excellence for Particle Physics at the Terascale (CoEPP) & CSSM, Department of Physics, University of Adelaide, South Australia, 5005, Adelaide, Australia)
We analyse a simple extension of the SM with just an additional scalar singlet coupled to the Higgs boson. We discuss the possible probes for electroweak baryogenesis in this model including collider searches, gravitational wave and direct dark matter detection signals. We show that a large portion of the model parameter space exists where the observation of gravitational waves would allow detection while the indirect collider searches would not.
