A heavier gluino from t-b-tau Yukawa-unified SUSY

作者：Baer Howard^*; Raza Shabbar; Shafi Qaisar

来源：Physics Letters B, 2012, 712(3): 250-254.

DOI：10.1016/j.physletb.2012.04.075

Supersymmetric models with t-b-tau Yukawa coupling unification and unified gaugino masses at the GUT scale-with mu %26gt; 0-show a mild preference for light gluino masses m((g) over tilde) less than or similar to 500 GeV. This range of ink is now essentially ruled out by LHC searches. We show that a heavier gluino with m((g) over tilde) similar to 0.5-3 TeV can also be compatible with excellent t-b-tau Yukawa coupling unification in supersymmetric models with non-universal Higgs masses (NUHM2). The gluino in such models is the lightest colored sparticle, while the squark sector displays an inverted mass hierarchy with m((q) over tilde) similar to 5-20 TeV. We present some LHC testable benchmark points for which the lightest Higgs boson mass m(h) similar or equal to 125 GeV. We also discuss LHC signatures of Yukawa-unified models with heavier gluinos. We expect gluino pair production followed by decay to final states containing four b-jets plus four W-bosons plus missing E-T to occur at possibly observable rates at LHC.

• 出版日期2012-6-6