Dirac Gauginos and the 125 GeV Higgs

TL;DR

This paper explores how models with Dirac gaugino masses can produce a 125 GeV Higgs, analyzing its properties, naturalness, and deviations from the Standard Model through detailed parameter scans.

Contribution

It introduces a comprehensive method to calculate Higgs properties in Dirac gaugino models using an upgraded SARAH/SPheno framework, including electroweak and flavor constraints.

Findings

Deviations from the Standard Model Higgs can be achieved in Dirac gaugino models.

Parameter scans identify regions consistent with a 125 GeV Higgs.

The approach improves accuracy in calculating Higgs and related observables.

Abstract

We investigate the mass, production and branching ratios of a 125 GeV Higgs in models with Dirac gaugino masses. We give a discussion of naturalness, and describe how deviations from the Standard Model in the key Higgs search channels can be simply obtained. We then perform parameter scans using a SARAH package upgrade, which produces SPheno code that calculates all relevant quantities, including electroweak precision and flavour constraint data, to a level of accuracy previously impossible for this class of models. We study three different variations on the minimal Dirac gaugino extension of the (N)MSSM.