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Register a new userWh plus missing-E_T signature from gaugino pair production at the LHC
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In SUSY models with heavy squarks and gaugino mass unification, the gaugino pair production reaction pp-> tw_1^pmtz_2 dominates gluino pair production for m_{tg}agt 1 TeV at LHC with sqrt{s}=14 TeV (LHC14). For this mass range, the two-body decays tw_1to Wtz_1 and tz_2to htz_1 are expected to dominate the chargino and neutralino branching fractions. By searching for ell bbar{b}+MET events from tw_1^pmtz_2 production, we show that LHC14 with 100 fb^{-1} of integrated luminosity becomes sensitive to chargino masses in the range m_{tw_1}sim 450-550 GeV corresponding to m_{tg}sim 1.5-2 TeV in models with gaugino mass unification. For 10^3 fb^{-1}, LHC14 is sensitive to the Wh channel for m_{tw_1}sim 300-800 GeV, corresponding to m_{tg}sim 1-2.8 TeV, which is comparable to the reach for gluino pair production followed by cascade decays. The Wh+MET search channel opens up a new complementary avenue for SUSY searches at LHC, and serves to point to SUSY as the origin of any new physics discovered via multijet and multilepton + MET channels.
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