A measurement of two-jet decays of theW andZ bosons at the CERN $\bar p$ p collider

J. Alitti,R. Ansari,R. E. Ansorge,D. Autiero,P. Bareyre,G. Blaylock,P. Bonamy,M. Bonesini,K. Borer,M. Bourliaud, D. Buskulic, G. Carboni, D. Cavalli, V. Cavasinni,P. Cenci,J. C. Chollet, C. Conta,G. Costa,F. Costantini,A. Cravero,A. Dell'Acqua,T. DelPrete,R. S. DeWolf,L. DiLella, G. F. Egan, K. F. Einsweiler,L. Fayard,A. Federspiel,R. Ferrari, M. Fraternali, D. Froidevaux,G. Fumagalli,J. M. Gaillard, F. Gianotti,O. Gildemeister,C. Gössling,V. G. Goggi,S. Grünendahl, K. Hara,S. Hellman,E. Hugentobler, K. Hultqvist,E. Iacopini, J. Incandela, K. Jakobs,P. Jenni,E. E. Kluge,N. Kurz,S. Lami, P. Lariccia, M. Lefebvre,L. Linssen, M. Livan,P. Lubrano,C. Magneville, L. Mandelli, L. Mapelli, M. Mazzanti,K. Meier,B. Merkel,J. P. Meyer,M. Moniez,R. Moning,M. Morganti,L. Müller,D. J. Munday,C. Onions,T. Pal,M. A. Parker,G. Parrour,F. Pastore,E. Pennacchio,J. M. Pentney,M. Pepe,L. Perini, C. Petridou,P. Petroff,H. Plothow-Besch, G. Polesello, A. Poppleton,K. Pretzl,M. Primavera,M. Punturo,L. Rasmussen,J. P. Repellin, A. Rimoldi, P. Scampoli,J. Schacher, V. Simak,S. L. Singh, S. Stapnes,A. V. Stirling,F. Tondini,S. N. Tovey,E. Tsesmelis, G. Unal,M. Valdata-Nappi, V. Vercesi,A. R. Weidberg, P. S. Wells,T. O. White,D. R. Wood,S. A. Wotton,H. Zaccone

msra（1991）

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摘要

A study of the two-jet mass spectrum measured with the UA 2 calorimeter has revealed a signal from hadronic decays ofW andZ bosons above a large background. Production and decay properties of the signal have been measured. The combined production cross-section σ·B(W, Z → two jets) is 9.6±2.3 (stat.)±1.1 (syst.) nb, compared with an expectation of 5.8 nb calculated to order αs2. A limit on the production cross-section of additional heavy vector bosons decaying into two jets is given as a function of the boson mass.

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A measurement of two-jet decays of theW andZ bosons at the CERN p collider

A measurement of two-jet decays of theW andZ bosons at the CERN $\bar p$ p collider