Operators from flavored dark sectors running to low energy

Abstract

We consider the effective field theory generated by a heavy mediator that connects Standard Model particles to a Dark Sector, considering explicitly the flavor structure of the operators. In particular, we study the model independent running and mixing between operators, as well as their matching at the electroweak scale. In addition to the explicit expression of the Renormalization Group Equations, we show the numerical solutions as well as some approximate analytical expressions that help understanding these solutions. At low energy, our results are particularly important in the case of light dark sectors communicating to the b quark, and can be immediately applied to flavored Dark Matter.

Light dark sectors through the Fermion portal

“…refs. [125,126] for the dark matter case). Our framework for applying limits on the fermion portal is available as the public DarkEFT code (described in appendix B).…”

Light Dark Sectors through the Fermion Portal

“…Refs. [122,123] for the dark matter case). Our framework for applying limits on the fermion portal is available as the public DarkEFT code (described in Appendix B).…”

Probing light dark scalars with future experiments

“…Notice also that this choice allows us to neglect SM radiative corrections that could otherwise be important. In fact, it has been shown that, for vector currents, the renormalization group evolution of the JHEP03(2021)272 effective operators from the scale Λ to the scale of low energy experiments is small [25][26][27][28][29][30][31][32][33][34][35][36]. Therefore, we will neglect such effect.…”