Published August 1, 2004 | Version v1
Journal article

Electroweak symmetry breaking via UV insensitive anomaly mediation

  • 1. School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)

Description

Anomaly mediation solves the supersymmetric flavor and CP problems. This is because the superconformal anomaly dictates that supersymmetry breaking is transmitted through nearly flavor-blind infrared physics that is highly predictive and UV insensitive. Slepton mass squareds, however, are predicted to be negative. This can be solved by adding D-terms for U(1)Y and U(1)B-L while retaining the UV insensitivity. In this paper we consider electroweak symmetry breaking via UV insensitive anomaly mediation in several models. For the minimal supersymmetric standard model we find a stable vacuum when tan β<1, but in this region the top Yukawa coupling blows up only slightly above the supersymmetry breaking scale. For the next-to-minimal supersymmetric standard model (NMSSM), we find a stable electroweak breaking vacuum but with a chargino that is too light. Replacing the cubic singlet term in the NMSSM superpotential with a term linear in the singlet we find a stable vacuum and viable spectrum. Most of the parameter region with correct vacua requires a large superpotential coupling, precisely what is expected in the 'Fat Higgs' model in which the superpotential is generated dynamically. We have therefore found the first viable UV complete, UV insensitive supersymmetry breaking model that solves the flavor and CP problems automatically: the Fat Higgs model with UV insensitive anomaly mediation. Moreover, the cosmological gravitino problem is naturally solved, opening up the possibility of realistic thermal leptogenesis

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
70
Journal Issue
3
Journal Page Range
p. 035001-035001.15
ISSN
0556-2821
CODEN
PRVDAQ

Optional Information

Notes
(c) 2004 The American Physical Society