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arXiv · 0910.3790

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

Ryosuke Sato·T. T. Yanagida·Kazuya Yonekura
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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.

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Ryosuke Sato, T. T. Yanagida, Kazuya Yonekura. 2009-10-20. Relaxing a constraint on the number of messengers in a low-scale gauge mediation. https://doi.org/10.1103/physrevd.81.045003

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