Published June 1, 2015 | Version v1
Journal article

Supergravity gauge theories strike back: there is no crisis for SUSY but a new collider may be required for discovery

  • 1. Dept. of Physics and Astronomy, University of Oklahoma, Norman, OK, 73019 (United States)
  • 2. Dept. of Physics, University of Wisconsin, Madison, WI 53706 (United States)

Description

More than 30 years ago, Arnowitt–Chamseddine–Nath and others established the compelling framework of supergravity gauge theories (SUGRA) as a picture for the next step in beyond the standard model physics. We review the current SUGRA scenario in light of recent data from LHC8 collider searches and the Higgs boson discovery. While many SUSY and non-SUSY scenarios are highly disfavored or even excluded by LHC, the essential SUGRA scenario remains intact and as compelling as ever. For naturalness, some non-universality between matter and Higgs sector soft terms is required along with substantial trilinear soft terms. SUSY models with radiatively-driven naturalness are found with high scale fine-tuning at a modest 10 %. In this case, natural SUSY might be discovered at LHC13 but could also easily elude sparticle search endeavors. A linear e + e collider with s > 2 m ( h i g g s i n o ) is needed to provide the definitive search for the required light higgsino states which are the hallmark of natural SUSY. In the most conservative scenario, we advocate inclusion of a Peccei–Quinn sector so that dark matter is composed of a WIMP/axion admixture i.e. two dark matter particles. (invited comment)

Availability note (English)

Available from http://dx.doi.org/10.1088/0031-8949/90/6/068003

Additional details

Publishing Information

Journal Title
Physica Scripta (Online)
Journal Volume
90
Journal Issue
6
Journal Page Range
[17 p.]
ISSN
1402-4896