Dirac Gauginos and Kinetic Mixing

TL;DR

This paper derives formulas for Dirac gaugino masses using analytic continuation in superspace, linking them to kinetic mixing, and explores their implications in field theory, string theory, and potential collider and dark matter phenomenology.

Contribution

It provides new formulae for Dirac gaugino masses at leading order and discusses their connection to kinetic mixing, including non-abelian cases and phenomenological implications.

Findings

Formulas for Dirac gaugino masses derived using superspace methods.

Connection established between Dirac gaugino masses and kinetic mixing.

Potential collider and dark matter effects discussed.

Abstract

We present formulae for the calculation of Dirac gaugino masses at leading order in the supersymmetry breaking scale using the methods of analytic continuation in superspace and demonstrate a link with kinetic mixing, even for non-abelian gauginos. We illustrate the result through examples in field and string theory. We discuss the possibility that the singlet superfield that gives the U(1) gaugino a Dirac mass may be a modulus, and some consequences of the D-term coupling to the scalar component. We give examples of possible effects in colliders and astroparticle experiments if the modulus scalar constitutes decaying dark matter.