Relaxing a constraint on the number of messengers in a low-scale gauge mediation
arXiv:0910.3790 · doi:10.1103/PhysRevD.81.045003
Abstract
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.
22pages; v2:explanations expanded in sec.3.2, reference added
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- Light Gauginos and Conformal Sequestering
- QCD Axion From a Spontaneously Broken B-L Gauge Symmetry
- A New Scheme for NMSSM in Gauge Mediation