Sphalerogenesis

TL;DR

The paper introduces sphalerogenesis, a new mechanism involving a dimension-six operator, to explain the universe's baryon asymmetry, which can be tested via electron EDM measurements.

Contribution

It proposes a novel CP-violating decay process involving a dimension-six operator to account for baryon asymmetry.

Findings

BAU can be explained with a new operator at rac{38}{TeV} scale

Scenario predicts measurable electron electric dipole moments

Testable predictions for upcoming EDM experiments

Abstract

We propose a mechanism called sphalerogenesis to explain the baryon asymmetry of the universe (BAU). The BAU is explained by a CP-violating decay of the electroweak sphaleron. We introduce a dimension-six operator constructed from weak gauge fields: $Q_{\widetilde{W}} \sim \Lambda^{-2} \epsilon_{ijk} \widetilde{W}_{\mu \nu}^{i} W^{j \nu \rho} W_{\rho}^{k\mu}$. We find that the BAU can be explained if $\Lambda \simeq 38\,{\rm TeV}$. This scenario can be tested by electron electric dipole moment measurements in the near future.