Beyond the Higgs boson at the Tevatron: detecting gluinos from Yukawa-unified SUSY

Understand

Simple SUSY GUT models based on the gauge group SO(10) require t-b-\tau Yukawa coupling unification, in addition to gauge coupling and matter unification.

• The Yukawa coupling unification places strong constraints on the expected superparticle mass spectrum, with scalar masses \sim 10 TeV while gluino masses are much lighter: in the 300--500 GeV range.
• The very heavy squarks suppress negative interference in the q\bar{q}\to\tg\tg cross section, leading to a large enhancement in production rates.
• The gluinos decay almost always via three-body modes into a pair of b-quarks, so we expect at least four b-jets per signal event.