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

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Zeitschrift für Physik C Particles and Fields

Abstract

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 α 2s . 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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Author information

Author notes

  1. G. F. Egan & S. N. Tovey

    Present address: University of Melbourne, 3052, Parkville, Australia

  2. M. Fraternali & L. Perini

    Present address: Istituto di Fisica, Università di Palermo, Italy

  3. C. Gössling

    Present address: Institut für Physik, Universität Dortmund, FRG

  4. K. Hara

    Present address: University of Tsukuba, 305, Tsukuba, Ibaraki, Japan

  5. E. Iacopini

    Present address: Scuola Normale Superiore, Pisa, Italy

  6. M. Livan

    Present address: Dipartimento di Fisica, Università di Cagliari, Italy

  7. M. Morganti

    Present address: Dipartimento di Fisica e INFN di Bologna, Università Bologna, Italy

  8. M. Primavera & M. Valdata-Nappi

    Present address: Dipartimento di Fisica dell'Università della Calabria e gruppo INFN, Cosenza, Italy

  9. V. Simak

    Present address: Institute of Physics of CSAV, Praha, Czechoslovakia

Authors and Affiliations

  1. Laboratorium für Hochenergiephysik, Universität Bern, Sidlerstrasse 5, CH-3012, Bern, Switzerland

    K. Borer, A. Federspiel, K. Hara, E. Hugentobler, R. Moning, L. Müller, T. Pal, K. Pretzl & J. Schacher

  2. Cavendish Laboratory, University of Cambridge, CB3 OHE, Cambridge, UK

    R. E. Ansorge, R. S. DeWolf, M. Lefebvre, D. J. Munday, J. M. Pentney, S. L. Singh, P. S. Wells, T. O. White & S. A. Wotton

  3. CERN, CH-1211, Geneva 23, Switzerland

    G. Blaylock, M. Bonesini, F. Costantini, L. DiLella, G. F. Egan, K. F. Einsweiler, G. Fumagalli, O. Gildemeister, C. Gössling, V. G. Goggi, S. Hellman, K. Hultqvist, J. Incandela, K. Jakobs, P. Jenni, M. Lefebvre, L. Linssen, P. Lubrano, L. Mapelli, K. Meier, C. Onions, T. Pal, M. A. Parker, G. Polesello, A. Poppleton, L. Rasmussen, V. Simak, S. Stapnes, S. N. Tovey, V. Vercesi, A. R. Weidberg & D. R. Wood

  4. Institut für Hochenergiephysik der Universität Heidelberg, Schröderstrasse 90, W-6900, Heidelberg, Federal Republic of Germany

    S. Grünendahl, E. E. Kluge, N. Kurz, S. Lami & H. Plothow-Besch

  5. Dipartimento di Fisica dell'Università di Milano and Sezione INFN Milano, I-20133, Milano, Italy

    M. Bonesini, D. Cavalli, G. Costa, A. Cravero, F. Gianotti, L. Mandelli, M. Mazzanti, L. Perini & G. Polesello

  6. Laboratoire de l'Accélérateur Linéaire, Université de Paris-Sud, F-91405, Orsay, France

    R. Ansari, D. Buskulic, J. C. Chollet, L. Fayard, D. Froidevaux, J. M. Gaillard, B. Merkel, M. Moniez, G. Parrour, P. Petroff, J. P. Repellin & G. Unal

  7. Dipartimento di Fisica Nucleare e Teorica, Università di Pavia and INFN, Sezione di Pavia, Via Bassi 6, I-27100, Pavia, Italy

    C. Conta, A. Dell'Acqua, R. Ferrari, M. Fraternali, G. Fumagalli, V. G. Goggi, M. Livan, F. Pastore, E. Pennacchio, A. Rimoldi & V. Vercesi

  8. Sezione di Perugia, Dipartimento di Fisica dell'Università di Perugia and INFN, via Pascoli, I-06100, Perugia, Italy

    P. Cenci, P. Lariccia, M. Pepe, M. Punturo, P. Scampoli & F. Tondini

  9. Sezione di Pisa, Dipartimento di Fisica dell'Università di Pisa and INFN, Via Livornese, S. Piero a Grado, I-56100, Pisa, Italy

    D. Autiero, G. Carboni, V. Cavasinni, F. Costantini, T. DelPrete, E. Iacopini, S. Lami, M. Morganti, C. Petridou, M. Primavera, F. Tondini & M. Valdata-Nappi

  10. Centre d'Etudes Nucléaires de Saclay, F-91191, Gif-sur-Yvette Cedex, France

    J. Alitti, P. Bareyre, P. Bonamy, M. Bourliaud, C. Magneville, J. P. Meyer, A. V. Stirling & H. Zaccone

  11. University of Melbourne, 3052, Parkville, Australia

    E. Tsesmelis

Authors
  1. J. Alitti
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  2. R. Ansari
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UA2 Collaboration., Alitti, J., Ansari, R. et al. A measurement of two-jet decays of theW andZ bosons at the CERN\(\bar p\) p collider. Z. Phys. C - Particles and Fields 49, 17–28 (1991). https://doi.org/10.1007/BF01570793

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  • DOI: https://doi.org/10.1007/BF01570793

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