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Four-fermion production in e+e− collisions at centre-of-mass energies of 130 and 136 GeV

Four-fermion events have been selected in a data sample of 5.8 pb −1 collected with the aleph detector at centre-of-mass energies of 130 and 136 GeV. The final states ℓ +ℓ − q q , ℓ +ℓ −ℓ +ℓ −, ν ν q q , and ν νℓ +ℓ − have been examined. Five events are observed in the data, in agreement with the St...

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Bibliographic Details
Published in:Physics letters. B 1996, Vol.388 (2), p.419-430
Main Authors: Decamp, D, Ghez, P, Goy, C, Nief, J.-Y, Delfino, M, Garrido, Ll, Sanchez, F, Colaleo, A, Creanza, D, Marinelli, N, Ruggieri, F, Zito, G, Lin, J, Ouyang, Q, Comas, P, Hagelberg, R, Knobloch, J, Minten, A, Pusztaszeri, J.-F, Rensing, P, Schneider, O, Monteil, S, Hansen, J.B, Nilsson, B.S, Markou, C, Zachariadou, K, Brient, J.C, Valassi, A, Georgiopoulos, C, Bossi, F, Campana, P, Capon, G, Murtas, F, Pepe-Altarelli, M, O'Shea, V, Scarr, J.M, Thomson, F, Thorn, S, Turnbull, R.M, Schmidt, M, Stenzel, H, Tittel, K, Abbaneo, D, Dornan, P.J, Betteridge, A.P, Finch, A.J, Foster, F, Hughes, G, Galla, A, Hoffmann, C, Rohne, E, Bencheikh, A.M, Bujosa, G, Diaconu, C, Konstantinidis, N, Tilquin, A, Blum, W, Büscher, V, Dietl, H, Kroha, H, Lutz, G, Denis, R.St, Wolf, G, Jacholkowska, A, Kim, D.W, Lefrançois, J, Nikolic, I, Schune, M.-H, Veillet, J.-J, Calderini, G, Ligabue, F, Lusiani, A, Rizzo, G, Sciabà, A, Tenchini, R, Tonelli, G, Vannini, C, Blair, G.A, Cerutti, F, Green, M.G, Maley, P, Lançon, E, Roussarie, A, Trabelsi, A, Vallage, B, Johnson, R.P, Litke, A.M, Newton, W.M, Böhrer, A, Apollonio, M, Williams, R.W, Elmer, P, González, S, Hayes, O.J, Nachtman, J.M, Scott, I.J, Wu, Sau Lan, Wu, X, Zheng, M, Zobernig, G
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Language:English
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Summary:Four-fermion events have been selected in a data sample of 5.8 pb −1 collected with the aleph detector at centre-of-mass energies of 130 and 136 GeV. The final states ℓ +ℓ − q q , ℓ +ℓ −ℓ +ℓ −, ν ν q q , and ν νℓ +ℓ − have been examined. Five events are observed in the data, in agreement with the Standard Model predictions of 6.67±0.38 events from four-fermion processes and 0.14 −0.05 +0.19 from background processes.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(96)01226-9