Abstract
We build explicit supersymmetric unification models where grand unified gauge symmetry breaking and supersymmetry (SUSY) breaking are caused by the same sector. Besides, the SM-charged particles are also predicted by the symmetry breaking sector, and they give the soft SUSY breaking terms through the so-called gauge mediation. We investigate the mass spectrums in an explicit model with SU(5) and additional gauge groups, and discuss its phenomenological aspects. Especially, nonzero A-term and B-term are generated at one-loop level according to the mediation via the vector superfields, so that the electro-weak symmetry breaking and 125 GeV Higgs mass may be achieved by the large B-term and A-term even if the stop mass is around 1 TeV.
Highlights
Decay, the direct search of SUSY particles, and the SM measurements
We will see that Higgs mass could be around 125 GeV, even if ΛSUSY is less than O(1) TeV, and the B-term could be consistent with the EW symmetry breaking
We proposed an explicit and simple supersymmetric model, where the spontaneous SUSY breaking and GUT breaking are achieved by the same sector
Summary
Massive gauge bosons appear according to the Higgs mechanism. Let us decompose the vector field (VFμ) for SU(NF )F as VFμ =. Xμ is the anti-fundamental and fundamental representations of SU(N )F × SU(N ), and Bμ′ is the U(1)F vector field, where U(1)F is from SU(NF )F. where ∆v = vX − vY is defined. W ′Aμ and Z′μ are given by the linear combinations of WFAμ and SU(N ) gauge boson (WNAμ), and B′μ and U(1)φ gauge boson (Aμφ) respectively: B′μ Aμφ cos θY sin θY − sin θY cos θY. Wμ, and Bμ are the gauge bosons for SU(N ) × SU(N )D × U(1)Y gauge symmetry, and their gauge couplings are given by gN = gF cos θ, gN = gF , g1′ = aN g1 = aN gF cos θY
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