Relaxing a constraint on the number of messengers in a low-scale gauge mediation

Understand

We propose a mechanism for relaxing a constraint on the number of messengers in low-scale gauge mediation models.

• The Landau pole problem for the standard-model gauge coupling constants in the low-scale gauge mediation can be circumvented by using our mechanism.
• An essential ingredient is a large positive anomalous dimension of messenger fields given by a large Yukawa coupling in a conformal field theory at high energies.
• The positive anomalous dimension reduces the contribution of the messengers to the beta function of the standard-model gauge couplings.