R-symmetric High Scale Supersymmetry

TL;DR

This paper explores the implications of introducing R-symmetry into high scale supersymmetry models, showing it can naturally produce a 125 GeV Higgs and allow for single Higgs doublet models, with discussions on neutrino masses and dark matter.

Contribution

It presents a novel high scale SUSY model with R-symmetry that predicts a Higgs mass near 125 GeV and supports single Higgs doublet scenarios, offering new theoretical insights.

Findings

R-symmetry forbids Majorana gaugino masses, leading to Dirac gauginos.

Models with R-symmetry can naturally produce a 125 GeV Higgs.

Single Higgs doublet models are more aesthetically appealing and feasible.

Abstract

Introducing an R-symmetry to models of high scale supersymmetry (SUSY) can have interesting consequences, and we focus on two aspects. If Majorana masses are forbidden by an R-symmetry and the main source of electroweak gaugino masses are Dirac terms, then the Higgs quartic coupling vanishing at the SUSY scale and the Higgs boson mass will be near 125 GeV. Moreover, using an R-symmetry, models with only one Higgs doublet in the UV can be constructed and we argue that, since we desire only a single Higgs at the weak scale, this scenario is more aesthetic than existing models. We subsequently present a model which draws on both of these features. We comment on neutrino masses and dark matter in these scenarios and discuss how the models presented can be discerned from alternative constructions with high scale SUSY, including Split SUSY.