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We examine the prospects for testing SO(10) Yukawa-unified supersymmetricmodels during the first year of LHC running at \sqrt{s}= 7 TeV, assumingintegrated luminosity values of 0.1 to 1 fb^-1. We consider two cases: theHiggs splitting (HS) and the D-term splitting (DR3) models. Each genericallypredicts light gluinos and heavy squarks, with an inverted scalar masshierarchy. We hence expect large rates for gluino pair production followed bydecays to final states with large b-jet multiplicity. For 0.2 fb^-1 ofintegrated luminosity, we find a 5 sigma discovery reach of m(gluino) ~ 400 GeVeven if missing transverse energy, E_T^miss, is not a viable cut variable, byexamining the multi-b-jet final state. A corroborating signal should stand outin the opposite-sign (OS) dimuon channel in the case of the HS model; the DR3model will require higher integrated luminosity to yield a signal in the OSdimuon channel. This region may also be probed by the Tevatron with 5-10 fb^-1of data, if a corresponding search in the multi-b+ E_T^miss channel isperformed. With higher integrated luminosities of ~1 fb^-1, using E_T^miss plusa large multiplicity of b-jets, LHC should be able to discover Yukawa-unifiedSUSY with m(gluino) up to about 630 GeV. Thus, the year 1 LHC reach forYukawa-unified SUSY should be enough to either claim a discovery of the gluino,or to very nearly rule out this class of models, since higher values ofm(gluino) lead to rather poor Yukawa unification.

Testing Yukawa-unified SUSY during year 1 of LHC: the role of multiple b-jets, dileptons and missing E_T