TY - JOUR
T1 - Intermediate scales, μ parameter, and fermion masses from string models
AU - Cleaver, Gerald
AU - Cvetič, Mirjam
AU - Espinosa, Jose R.
AU - Everett, Lisa
AU - Langacker, Paul
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1998
Y1 - 1998
N2 - We address intermediate scales within a class of string models. The intermediate scales occur due to the SM singlets (Formula presented) acquiring non-zero VEVs due to radiative breaking; the mass squared (Formula presented) of (Formula presented) is driven negative at (Formula presented) due to O(1) Yukawa couplings of (Formula presented) to exotic particles (calculable in a class of string models). The actual VEV of (Formula presented) depends on the relative magnitude of the non-renormalizable terms of the type (Formula presented) in the superpotential. We mainly consider the case in which the (Formula presented) are charged under an additional non-anomalous (Formula presented) gauge symmetry and the VEVs occur along (Formula presented)- and (Formula presented)-flat directions. We explore various scenarios in detail, depending on the type of Yukawa couplings to the exotic particles and on the initial boundary values of the soft SUSY breaking parameters. We then address the implications of these scenarios for the μ parameter and the fermionic masses of the standard model.
AB - We address intermediate scales within a class of string models. The intermediate scales occur due to the SM singlets (Formula presented) acquiring non-zero VEVs due to radiative breaking; the mass squared (Formula presented) of (Formula presented) is driven negative at (Formula presented) due to O(1) Yukawa couplings of (Formula presented) to exotic particles (calculable in a class of string models). The actual VEV of (Formula presented) depends on the relative magnitude of the non-renormalizable terms of the type (Formula presented) in the superpotential. We mainly consider the case in which the (Formula presented) are charged under an additional non-anomalous (Formula presented) gauge symmetry and the VEVs occur along (Formula presented)- and (Formula presented)-flat directions. We explore various scenarios in detail, depending on the type of Yukawa couplings to the exotic particles and on the initial boundary values of the soft SUSY breaking parameters. We then address the implications of these scenarios for the μ parameter and the fermionic masses of the standard model.
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U2 - 10.1103/PhysRevD.57.2701
DO - 10.1103/PhysRevD.57.2701
M3 - Article
AN - SCOPUS:0000882995
VL - 57
SP - 2701
EP - 2715
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 5
ER -