Intermediate Scale Dependence of Non-Universal Gaugino Masses in Supersymmetric SO(10)

TL;DR

This paper investigates how the ratios of gaugino masses in supersymmetric SO(10) models depend on the intermediate symmetry breaking scale, showing significant variations at lower scales.

Contribution

It provides a detailed calculation of gaugino mass ratio dependence on the intermediate scale in SO(10) models, highlighting the impact of scale variations.

Findings

Gaugino mass ratios vary significantly at low intermediate scales.

The ratios are stable when the breaking scales are close.

Intermediate scale effects are crucial for phenomenological predictions.

Abstract

We calculate the dependence on intermediate scale of the gaugino mass ratios upon breaking of SO(10) into the SM via an intermediate group $H$. We see that the ratios change significantly when the intermediate scale is low (say, $10^8$ GeV or 1 Tev) compared to the case when the two breakings occur at the same scale.