Deflected Anomaly Mediated SUSY Breaking Scenario With General Messenger-Matter Interactions

TL;DR

This paper introduces a generalized messenger-matter interaction framework within deflected anomaly mediated SUSY breaking, addressing slepton mass issues and enabling a 125 GeV Higgs with minimal messenger species.

Contribution

It derives the most general soft parameters for this scenario and highlights the unique interference effects that solve tachyonic slepton problems and support Higgs mass requirements.

Findings

Solves tachyonic slepton problem with messenger-matter interactions.

Enables large |A_t| without triggering color-breaking vacua.

Requires few messenger species to avoid Landau poles.

Abstract

We propose to introduce general messenger-matter interactions in the deflected anomaly mediated SUSY breaking scenario. The most general form for the resulting soft parameters are derived. New interference terms between the GMSB type and AMSB type contributions are the unique feature of this scenario. Messenger-matter interactions involving sleptons can be used to solve the tachyonic slepton problem and naturally lead to positive slepton masses regardless of the sign of deflection parameter. Besides, due to the new contributions, large $|A_t|$ that will not trigger color-breaking stop VEV are also possible in this scenario, thus can easily give the 125 GeV higgs which was discovered by LHC. This type of deflected AMSB scenario need very few messenger species, thus can avoid possible non-perturbative gauge couplings below the GUT scale ( or Landau pole below the Planck scale ).