TOP-QUARK SEARCH WITH THE D0 1992-1993 DATA SAMPLE

TOP-QUARK SEARCH WITH THE D0 1992-1993 DATA SAMPLE

We present results on the search for the top quark in pp̄ collisions at s =1.8 TeV with an integrated luminosity of 13.5±1.6 pb-1. We have considered tt̄ production in the standard model using electron and muon dilepton decay channels (tt̄→eμ+jets, ee+jets, and μμ+jets) and single-lepton decay chann...

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Opis bibliograficzny
Główni autorzy: Abachi, S, Abbott, B, Abolins, M, Acharya, B, Adam, I, Adams, D, Admas, M, Ahn, S, Aihara, H, Alitti, J, Alvarez, G, Alves, G, Amidi, E, Amos, N, Anderson, E, Aronson, S, Astur, R, Avery, G, Baden, A, Balamurali, V, Balderston, J, Baldin, B, Bantly, J, Bartlett, J, Bazizi, K
Format: Journal article
Wydane: 1995
Opis
Streszczenie:We present results on the search for the top quark in pp̄ collisions at s =1.8 TeV with an integrated luminosity of 13.5±1.6 pb-1. We have considered tt̄ production in the standard model using electron and muon dilepton decay channels (tt̄→eμ+jets, ee+jets, and μμ+jets) and single-lepton decay channels (tt̄→e+jets and μ+jets) with and without tagging of b quark jets. An analysis of these data optimized for top quark masses below 140 GeV/c2 gives a lower top quark mass limit of 128 GeV/c2. An analysis optimized for higher top quark masses yields 9 events with an expected background of 3.8±0.9. If we assume that the excess is due to tt̄ production, and assuming a top quark mass of 180 GeV/c2, we obtain a cross section of 8.2±5.1 pb. © 1995 The American Physical Society.

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