2-Jet Mass Distributions At The Cern Proton-Antiproton Collider

C. Albajar,M.G. Albrow,O.C. Allkofer, A. Astbury,B. Aubert,T. Axon, C. Bacci,T. Bacon,N. Bains,J.R. Batley, G. Bauer,S. Beingessner,A. Bettini,A. Bezaguet,R. Bonino, K. Bos,E. Buckley,G. Busetto,P. Catz,P. Cennini,S. Centro, F. Ceradini,D.G. Charlton, G. Ciapetti,S. Cittolin,D. Clarke,D. Cline,C. Cochet, J. Colas,P. Colas,M. Corden, J.A. Coughlan,G. Cox,D. Dau,J.P. Debrion,M. Degiorgi,M. Della Negra,M. Demoulin, D. Denegri,A. Diciaccio,F.J. Diez Hedo, L. Dobrzynski,J. Dorenbosch,J.D. Dowell, E. Duchovni,K. Eggert, E. Eisenhandler,N. Ellis,P. Erhard,H. Faissner,I.F. Fensome, A. Ferrando,M. Fincke-Keeler,P. Flynn,G. Fontaine, J. Garvey,D. Gee,S. Geer, A. Geiser,C. Ghesquiere, P. Ghez,C. Chiglino,Y. Giraud-Heraud, A. Givernaud,A. Gonidec, H. Grassmann,J. Gregory,W. Haynes, S.J. Haywood,D.J. Holthuizen,M. Ikeda,W. Jank,M. Jimack,G. Jorat,D. Joyce,P.I.P. Kalmus,V. Karimäki,R. Keeler,I. Kenyon,A. Kernan,A. Khan,W. Kienzle,R. Kinnunen,M. Krammer, J. Kroll,D. Kryn,F. Lacava,M. Landon,J.P. Lees,R. Leuchs,S. Levegrün,S. Li,M. Lindgren,D. Linglin,P. Lipa,E. Locci,T. Markiewicz, C. Markou,M. Markytan,M.A. Marquina,G. Maurin,J.-P. Mendiburu,A. Meneguzzo,J.P. Merlo, T. Meyer,M.-N. Minard,M. Mohammadi, K. Morgan, H.-G. Moser,A. Moulin,B. Mours,Th. Muller,L. Naumann,P. Nedelec, A. Nisati,A. Norton, F. Pauss,C. Perault, E. Petrolo,G. Piano Mortari,E. Pietarinen,C. Pigot,M. Pimiä,A. Placci,J.-P. Porte,M. Preischl,E. Radermacher,T. Redelberger, H. Reithler,J.-P. Revol, D. Robinson, T. Rodrigo,J. Rohlf, C. Rubbia, G. Sajot,G. Salvini,J. Sass,D. Samyn,D. Schinzel,M. Schröder,A. Schwartz,W. Scott, C. Seez,T.P. Shah,I. Sheer,I. Siotis,D. Smith, R. Sobie,P. Sphicas, J. Strauss,J. Streets,C. Stubenrauch, D. Summers, K. Sumorok,F. Szoncso,C. Tao, A. Taurok,I. Ten Have,S. Tether,G. Thompson,E. Tscheslog, J. Tuominiemi,W. Van De Guchte,A. Van Dijk,J.P. Vialle,L. Villasenor,T.S. Virdee,W. Von Schlippe,J. Vrana,V. Vuillemin,K. Wacker, G. Walzel,A. Wildish,I. Wingerter,S.J. Wimpenny,X. Wu, C.-E. Wulz,T. Wyatt,M. Yvert,C. Zaccardelli,I. Zacharov, N. Zaganidis, L. Zanello, P. Zotto

PHYSICS LETTERS B(1988)

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摘要
Two-jet mass distributions have been measured as a function of centre-of-mass scattering angle for high-mass jet pairs produced in proton-antiproton collisions at the CERN collider operating at a centre-of-mass energy of 630 GeV. The agreement between QCD expectations and the experimental measurements has been used to place limits on the production cross section of an object X decaying into two jets. In particular we consider the existence of a massive colour octet of vector gauge bosons (axigluons). We exclude axigluons with a width Λ A < 0.4 m A and a mass m A in the range 150 < m A < 310 GeV/ c 2 (95% CL).
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关键词
centre of mass,particle physics,cross section
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