Baryogenesis with Scalar Bilinears

Details Baryogenesis with Scalar Bilinears Baryogenesis with Scalar Bilinears

1998-11-04

arxiv.org/abs/hep-ph/9811240v1

Phys.Rev. D60 (1999) 076005

Physics

High Energy Physics

High Energy Physics - Phenomenology

LATEX, 14 pages, one figure included

Scientific paper

10.1103/PhysRevD.60.076005

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.

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