Sphalerogenesis

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: $Q_{\tilde{W}}\sim \hat{I}{›}^{-2}\hat{I}{\mu }_{ijk}{\tilde{W}}_{\hat{I}¼\hat{I}½}^i{W}^{j\hat{I}½\ddot{I}}{W}_{\ddot{I}}{}^{k\hat{I}¼}$. We find that the BAU can be explained if $\hat{I}›\simeq 38\mathrm{TeV}$. This scenario can be tested by electron electric dipole moment measurements in the near future.

8 pages, 4 figures, Version accepted for publication in Phys. Rev. D