SEARCH FOR DECAYS OF THE W+/-BOSONS AND Z-BOSONS INTO QUARK ANTIQUARK PAIRS

SEARCH FOR DECAYS OF THE W+/-BOSONS AND Z-BOSONS INTO QUARK ANTIQUARK PAIRS

The invariant mass distribution of jet pairs observed in the UA2 central calorimeter is examined in the search for an excess of events in the region of the W± and Z bosons, which would reveal their decays into quark-antiquark pairs. We give a detailed account of the methods of analysis used to optim...

詳細記述

書誌詳細
主要な著者: Ansari, R, Bagnaia, P, Banner, M, Battiston, R, Bernlohr, K, Booth, C, Borer, K, Borghini, M, Carboni, G, Cavasinni, V, Cenci, P, Chollet, J, Clark, A, Conta, C, Corona, C, Costantini, F, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Dineshansen, J, Einsweiler, K, Fayard, L, Ferrari, R, Fraternali, M
フォーマット: Journal article
言語:English
出版事項: 1987
その他の書誌記述
要約:The invariant mass distribution of jet pairs observed in the UA2 central calorimeter is examined in the search for an excess of events in the region of the W± and Z bosons, which would reveal their decays into quark-antiquark pairs. We give a detailed account of the methods of analysis used to optimize the mass resolution achieving ≅±10%. A structure is observed at the level of ≅ 3 standard deviations in the mass region of W± and Z with shape and position consistent with expectation from their qq̄decays. It contains 632 ± 190 events, 1.4 standard deviations above the standard model prediction of 340 ± 80 events. © 1987.

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