Four body decay of the lighter top squark constrained by the Lighter CP-even Higgs boson mass bound
نویسنده
چکیده
We reinvestigated the parameter space favouring the 4-body decay of the lighter top squark accessible at Tevatron Run-II consistent with the lighter CP-even Higgs boson mass bound from LEP, in mSUGRA as well as in unconstrained supersymmetric models. Our results show that the lighter top squark search prospects via the 4-body decay mode, in particular the l+n−jets+E/T topology, are not promising in mSUGRA due to the bound mh0 > ∼ 114.4 GeV. The existing bounds from Tevatron Run-I and LEP assuming 100% BR of the loop decay of lighter top squark are, therefore, valid to a good approximation. We also find that the prospects are still rather promising in the unconstrained MSSM model over a significant regions of parameter spaces. We have commented upon, with illustrative examples, the search prospects if the future experiments push the Higgs boson mass bound upward. PACS no: 11.30.Pb, 12.60.Jv, 14.80.Ly, 12.60.Fr [email protected]
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