TY - JOUR
T1 - Relaxing a constraint on the number of messengers in a low-scale gauge mediation
AU - Sato, Ryosuke
AU - Yanagida, T. T.
AU - Yonekura, Kazuya
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/2/1
Y1 - 2010/2/1
N2 - 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.
AB - 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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U2 - 10.1103/PhysRevD.81.045003
DO - 10.1103/PhysRevD.81.045003
M3 - Article
AN - SCOPUS:77749316961
VL - 81
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 4
M1 - 045003
ER -