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Title: A minimally fine-tuned supersymmetric standard model

Abstract

We construct here supersymmetric theories in which the correct scale for electroweak symmetry breaking is obtained without significant fine-tuning. We calculate the fine-tuning parameter for these theories to be at the 20% level, which is significantly better than in conventional supersymmetry breaking scenarios. Supersymmetry breaking occurs at a low scale of order 100 TeV, and is transmitted to the supersymmetric standard-model sector through standard-model gauge interactions. The Higgs sector contains two Higgs doublets and a singlet field, with a superpotential that takes the most general form allowed by gauge invariance. An explicit model is constructed in 5D warped space with supersymmetry broken on the infrared brane. We perform a detailed analysis of electroweak symmetry breaking for this model, and demonstrate that the fine-tuning is in fact reduced. A new candidate for dark matter is also proposed, which arises from the extended Higgs sector of the model. Finally, we discuss a purely 4D theory which may also significantly reduce fine-tuning.

Authors:
 [1];  [2];  [3]
  1. Univ. of Arizona, Tucson, AZ (United States). Dept. of Physics
  2. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Theoretical Physics Group
  3. Williams College, Williamstown, MA (United States). Dept. of Physics
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Arizona, Tucson, AZ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)
OSTI Identifier:
1511293
Grant/Contract Number:  
AC03-76SF00098; FG03-91ER40676; PHY-0408954; PHY-0403380
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Physics. B
Additional Journal Information:
Journal Volume: 725; Journal Issue: 1-2; Journal ID: ISSN 0550-3213
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Chacko, Z., Nomura, Yasunori, and Tucker-Smith, David. A minimally fine-tuned supersymmetric standard model. United States: N. p., 2005. Web. doi:10.1016/j.nuclphysb.2005.07.019.
Chacko, Z., Nomura, Yasunori, & Tucker-Smith, David. A minimally fine-tuned supersymmetric standard model. United States. doi:10.1016/j.nuclphysb.2005.07.019.
Chacko, Z., Nomura, Yasunori, and Tucker-Smith, David. Mon . "A minimally fine-tuned supersymmetric standard model". United States. doi:10.1016/j.nuclphysb.2005.07.019. https://www.osti.gov/servlets/purl/1511293.
@article{osti_1511293,
title = {A minimally fine-tuned supersymmetric standard model},
author = {Chacko, Z. and Nomura, Yasunori and Tucker-Smith, David},
abstractNote = {We construct here supersymmetric theories in which the correct scale for electroweak symmetry breaking is obtained without significant fine-tuning. We calculate the fine-tuning parameter for these theories to be at the 20% level, which is significantly better than in conventional supersymmetry breaking scenarios. Supersymmetry breaking occurs at a low scale of order 100 TeV, and is transmitted to the supersymmetric standard-model sector through standard-model gauge interactions. The Higgs sector contains two Higgs doublets and a singlet field, with a superpotential that takes the most general form allowed by gauge invariance. An explicit model is constructed in 5D warped space with supersymmetry broken on the infrared brane. We perform a detailed analysis of electroweak symmetry breaking for this model, and demonstrate that the fine-tuning is in fact reduced. A new candidate for dark matter is also proposed, which arises from the extended Higgs sector of the model. Finally, we discuss a purely 4D theory which may also significantly reduce fine-tuning.},
doi = {10.1016/j.nuclphysb.2005.07.019},
journal = {Nuclear Physics. B},
number = 1-2,
volume = 725,
place = {United States},
year = {2005},
month = {8}
}

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