English

Perturbative Unitarity Constraints on a Supersymmetric Higgs Portal

High Energy Physics - Phenomenology 2014-07-03 v1

Abstract

We place perturbative unitarity constraints on both the dimensionful and dimensionless couplings in the Next-to-Minimal Supersymmetric Standard Model Higgs Sector. These constraints, plus the requirement that the singlino and/or Higgsino constitutes at least part of the observed dark matter relic abundance, generate upper bounds on the Higgs and neutralino/chargino mass spectrum. We obtain an upper bound of 12 TeV for the charginos and neutralinos and 20 TeV for the heavy Higgses outside defined fine-tuned regions. By using the NMSSM as a template, we describe a method which replaces naturalness arguments with more rigorous perturbative unitarity arguments to get a better understanding of when new physics will appear.

Keywords

Cite

@article{arxiv.1407.0395,
  title  = {Perturbative Unitarity Constraints on a Supersymmetric Higgs Portal},
  author = {Kassahun Betre and Sonia El Hedri and Devin G. E. Walker},
  journal= {arXiv preprint arXiv:1407.0395},
  year   = {2014}
}

Comments

5 pages, 3 figures