Baryogenesis with Scalar Bilinears

Abstract

We show that if a baryon asymmetry of the universe is generated through the out-of-equilibrium decays of heavy scalar bilinears coupling to two fermions of the minimal standard model, it is necessarily an asymmetry conserving $(B-L)$ which cannot survive past the electroweak phase transition because of sphalerons. We then show that a surviving $(B-L)$ asymmetry may be generated if the heavy scalars decay into two fermions, \underline {and into two light scalars} (which may be detectable at hadron colliders). We list all possible such trilinear scalar interactions, and discuss how our new baryogenesis scenario may occur naturally in supersymmetric grand unified theories.

LATEX, 14 pages, one figure included

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Cited by in corpus (10)

• Effects of CP-violating phases on Higgs boson production at hadron colliders in the Minimal Supersymmetric Standard Model
• Leptogenesis from Neutralino Decay with Nonholomorphic R-Parity Violation
• Neutrinoless Double Beta Decay with Negligible Neutrino Mass
• Operator Analysis of Neutrinoless Double Beta Decay
• Sleptogenesis
• Neutrinoless double beta decay with scalar bilinears
• Baryon and Lepton Number Violation with Scalar Bilinears
• Gauge Baryon Number and Dibaryonic Dark Matter
• $B-L$ violating nucleon decays as a probe of leptoquarks and implications for baryogenesis
• Pair production of neutralinos and charginos at the LHC: the role of Higgs bosons exchange