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Title: Supernatural supersymmetry: Phenomenological implications of anomaly-mediated supersymmetry breaking

Abstract

We discuss the phenomenology of supersymmetric models in which supersymmetry breaking terms are induced by the super-Weyl anomaly. Such a scenario is envisioned to arise when supersymmetry breaking takes place in another world, i.e., on another brane. We review the anomaly-mediated framework and study in detail the minimal anomaly-mediated model parametrized by only 3+1 parameters: M{sub aux}, m{sub 0}, tan {beta}, and sgn({mu}). The renormalization group equations exhibit a novel ''focus point'' (as opposed to fixed point) behavior, which allows squark and slepton masses far above their usual naturalness bounds. We present the superparticle spectrum and highlight several implications for high energy colliders. Three lightest supersymmetric particle (LSP) candidates exist: the W-ino, the stau, and the tau sneutrino. For the W-ino LSP scenario, light W-ino triplets with the smallest possible mass splittings are preferred; such W-inos are within reach of run II Fermilab Tevatron searches. Finally, we study a variety of sensitive low energy probes, including b{yields}s{gamma}, the anomalous magnetic moment of the muon, and the electric dipole moments of the electron and neutron. (c) 2000 The American Physical Society.

Authors:
 [1];  [1]
  1. School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)
Publication Date:
OSTI Identifier:
20216162
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 61; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; SUPERSYMMETRY; SYMMETRY BREAKING; RENORMALIZATION; SPARTICLES; ELECTRIC DIPOLE MOMENTS; MASS; THEORETICAL DATA

Citation Formats

Feng, Jonathan L., and Moroi, Takeo. Supernatural supersymmetry: Phenomenological implications of anomaly-mediated supersymmetry breaking. United States: N. p., 2000. Web. doi:10.1103/PhysRevD.61.095004.
Feng, Jonathan L., & Moroi, Takeo. Supernatural supersymmetry: Phenomenological implications of anomaly-mediated supersymmetry breaking. United States. doi:10.1103/PhysRevD.61.095004.
Feng, Jonathan L., and Moroi, Takeo. Mon . "Supernatural supersymmetry: Phenomenological implications of anomaly-mediated supersymmetry breaking". United States. doi:10.1103/PhysRevD.61.095004.
@article{osti_20216162,
title = {Supernatural supersymmetry: Phenomenological implications of anomaly-mediated supersymmetry breaking},
author = {Feng, Jonathan L. and Moroi, Takeo},
abstractNote = {We discuss the phenomenology of supersymmetric models in which supersymmetry breaking terms are induced by the super-Weyl anomaly. Such a scenario is envisioned to arise when supersymmetry breaking takes place in another world, i.e., on another brane. We review the anomaly-mediated framework and study in detail the minimal anomaly-mediated model parametrized by only 3+1 parameters: M{sub aux}, m{sub 0}, tan {beta}, and sgn({mu}). The renormalization group equations exhibit a novel ''focus point'' (as opposed to fixed point) behavior, which allows squark and slepton masses far above their usual naturalness bounds. We present the superparticle spectrum and highlight several implications for high energy colliders. Three lightest supersymmetric particle (LSP) candidates exist: the W-ino, the stau, and the tau sneutrino. For the W-ino LSP scenario, light W-ino triplets with the smallest possible mass splittings are preferred; such W-inos are within reach of run II Fermilab Tevatron searches. Finally, we study a variety of sensitive low energy probes, including b{yields}s{gamma}, the anomalous magnetic moment of the muon, and the electric dipole moments of the electron and neutron. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevD.61.095004},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 9,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}