TY - JOUR

T1 - [Formula Presented] symmetry breaking in supersymmetric [Formula Presented] models

AU - Langacker, Paul

AU - Wang, Jing

PY - 1998

Y1 - 1998

N2 - We study the electroweak and (Formula presented) symmetry breaking patterns in models with the particle content of supersymmetric (Formula presented) including standard model singlets (Formula presented) and exotic quarks (Formula presented) Motivated by free fermionic string models, we do not require (Formula presented)-type relations between Yukawa couplings. In particular, we assume that baryon and lepton numbers are conserved, so that the exotic quarks can be light. Gauge invariance allows Yukawa interactions between (Formula presented) and Higgs doublets, and between (Formula presented) and the exotic quarks, allowing radiative (Formula presented) symmetry breaking and the generation of an effective (Formula presented) parameter at the electroweak scale. For both the (Formula presented) and (Formula presented) models, universal soft supersymmetry breaking parameters and Yukawa universality at the high (string) scale do not yield acceptable low energy phenomenology. Relaxing universality, we find solutions with phenomenologically acceptable values of (Formula presented) and the (Formula presented) mixing angle. In addition, by varying the (Formula presented) charge assignments due to the mixing of (Formula presented) and (Formula presented) of (Formula presented) it is possible to have acceptable low energy phenomenology with universal boundary conditions.

AB - We study the electroweak and (Formula presented) symmetry breaking patterns in models with the particle content of supersymmetric (Formula presented) including standard model singlets (Formula presented) and exotic quarks (Formula presented) Motivated by free fermionic string models, we do not require (Formula presented)-type relations between Yukawa couplings. In particular, we assume that baryon and lepton numbers are conserved, so that the exotic quarks can be light. Gauge invariance allows Yukawa interactions between (Formula presented) and Higgs doublets, and between (Formula presented) and the exotic quarks, allowing radiative (Formula presented) symmetry breaking and the generation of an effective (Formula presented) parameter at the electroweak scale. For both the (Formula presented) and (Formula presented) models, universal soft supersymmetry breaking parameters and Yukawa universality at the high (string) scale do not yield acceptable low energy phenomenology. Relaxing universality, we find solutions with phenomenologically acceptable values of (Formula presented) and the (Formula presented) mixing angle. In addition, by varying the (Formula presented) charge assignments due to the mixing of (Formula presented) and (Formula presented) of (Formula presented) it is possible to have acceptable low energy phenomenology with universal boundary conditions.

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U2 - 10.1103/PhysRevD.58.115010

DO - 10.1103/PhysRevD.58.115010

M3 - Article

AN - SCOPUS:33750947228

SN - 1550-7998

VL - 58

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 11

ER -