1. NONUNIVERSAL GAUGINO MASSES AND NATURAL SUPERSYMMETRY.
- Author
-
GOGOLADZE, ILIA, NASIR, FARIHA, and SHAFI, QAISAR
- Subjects
GAUGINO ,SUPERSYMMETRY ,HIGGSINO ,QUARKS ,LEPTONS (Nuclear physics) ,GLUINO ,HIGGS bosons - Abstract
We demonstrate that natural supersymmetry is readily realized in the framework of SU(4)
c × SU(2)L × SU(2)R with nonuniversal gaugino masses. Focusing on ameliorating the little hierarchy problem, we explore the parameter space of this model which yields small fine-tuning measuring parameters (natural supersymmetry) at the electroweak scale (ΔEW ) as well as at high scale (ΔHS ). It is possible to have both ΔEW and ΔHS less than 100 in these models, (2% or better fine-tuning), while keeping the light CP-even (Standard Model-like) Higgs mass in the 123-127 GeV range. The light stop quark mass lies in the range 700 GeV < mt < 1500 GeV , and the range for the light stau lepton mass is GeV < m1 τ < 1300 GeV. The first two family squarks are in the mass range 3000 GeV < m1 t < 4500 GeV , and for the gluino we find 2500 GeV < m1 g < 3500 GeV . We do not find any solution with natural supersymmetry which yields significant enhancement for Higgs production and decay in the diphoton channel. [ABSTRACT FROM AUTHOR]1 - Published
- 2013
- Full Text
- View/download PDF