Data di Pubblicazione:
2000
Abstract:
The exclusive electroproduction of omega mesons, ep --> e omega p, has been studied in the kinematic range 3 < Q(2) < 20 GeV(2), 40 < W< 120 GeV and /t/ < 0.6 GeV(2) with the ZEUS detector at HERA using an integrated luminosity of 37.7 pb(-1). The omega mesons were identified via the decay omega --> pi(+)pi(-)pi(0). The exclusive cross section in the above kinematic region is sigma(ep-->e omega p) = 0.108 +/- 0.014(stat.) +/- 0.026(syst.) nb. The reaction ep --> e phi p, phi --> pi(+)pi(-)pi(0), has also been measured. The cross sections, as well as the ratios sigma(gamma)(.) (p --> omega p)/sigma(gamma)(.) (0)(-->rho)(p) and sigma(gamma)(.) (p -->omega p)/sigma(gamma)(.) (p -->phi p), are presented as a function of w and Q(2) Thus, for the first time, the properties of omega electroproduction can be compared to those of rho(0),phi and J/psi electroproduction at high W. (C) 2000 Elsevier Science B.V. All rights reserved.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; VECTOR-MESONS; PHOTOPRODUCTION; QCD; CONSTRUCTION; RHO(0); SCATTERING; DESIGN; DEEP; ZEUS
Elenco autori:
J. Breitweg;S. Chekanov;M. Derrick;D. Krakauer;S. Magill;B. Musgrave;A. Pellegrino;J. Repond;R. Stanek;R. Yoshida;M. C. K.;G. Abbiendi;F. Anselmo;P. Antonioli;G. Bari;M. Basile;L. Bellagamba;D. Boscherini;A. Bruni;G. Bruni;G. C. Romeo;G. Castellini;L. Cifarelli;F. Cindolo;A. Contin;N. Coppola;M. Corradi;S. D. Pasquale;P. Giusti;G. Iacobucci;G. Laurenti;G. Levi;A. Margotti;T. Massam;R. Nania;F. Palmonari;A. Pesci;A. Polini;G. Sartorelli;Y. Z. Garcia;A. Zichichi;C. Amelung;A. Bornheim;I. Brock;K. Coboken;J. Crittenden;R. Deffner;H. Hartmann;K. Heinloth;E. Hilger;P. Irrgang;H. P. Jakob;A. Kappes;U. F. Katz;R. Kerger;E. Paul;J. Rautenberg;H. Schnurbusch;A. Stifutkin;J. Tandler;K. C. Voss;A. Weber;H. Wieber;D. S. Bailey;O. Barret;N. H. Brook;B. Foster;G. P. Heath;H. F. Heath;J. D. McFall;E. Rodrigues;J. Scott;R. J. Tapper;M. Capua;A. Mastroberardino;M. Schioppa;G. Susinno;H. Y. Jeoung;J. Y. Kim;J. H. Lee;I. T. Lim;K. J. Ma;M. Y. Pac;A. Caldwell;W. Liu;X. Liu;B. Mellado;S. Paganis;S. Sampson;W. B. Schmidke;F. Sciulli;J. Chwastowski;A. Eskreys;J. Figiel;K. Klimek;K. Olkiewicz;K. Piotrzkowski;M. B. Przybycien;P. Stopa;L. Zawiejski;B. Bednarek;K. Jelen;D. Kisielewska;A. M. Kowal;T. Kowalski;M. Przybycien;E. Rulikowska-Zarebska;L. Suszycki;D. Szuba;A. Kotanski;L. A. T.;U. Behrens;J. K. Bienlein;K. Borras;D. Dannheim;K. Desler;G. Drews;A. Fox-Murphy;U. Fricke;F. Goebel;S. Goers;P. Gottlicher;R. Graciani;T. Haas;W. Hain;G. F. Hartner;D. Hasell;K. Hebbel;M. Kasemann;W. Koch;U. Kotz;H. Kowalski;L. Lindemann;B. Lohr;R. Mankel;M. Martinez;M. Milite;M. Moritz;D. Notz;F. Pelucchi;M. C. Petrucci;M. Rohde;A. A. Savin;U. Schneekloth;F. Selonke;M. Sievers;S. Stonjek;G. Wolf;U. Wollmer;C. Youngman;W. Zeuner;C. Coldewey;A. L. D.;A. Meyer;S. Schlenstedt;P. B. Straub;G. Barbagli;E. Gallo;P. Pelfer;G. Maccarrone;L. Votano;A. Bamberger;A. Benen;S. Eisenhardt;P. Markun;H. Raach;S. Wolfle;P. J. Bussey;M. Bell;A. T. Doyle;S. W. Lee;A. Lupi;N. Macdonald;G. J. McCance;D. H. Saxon;L. E. Sinclair;I. O. Skillicorn;R. Waugh;I. Bohnet;N. Gendner;U. Holm;A. Meyer-Larsen;H. Salehi;K. Wick;A. Garfagnini;I. Gialas;L. K. Gladilin;D. Kcira;R. Klanner;E. Lohrmann;G. Poelz;F. Zetsche;R. Goncalo;K. R. Long;D. B. Miller;A. D. Tapper;R. Walker;U. Mallik;P. Cloth;D. Filges;T. Ishii;M. Kuze;K. Nagano;K. Tokushuku;S. Yamada;Y. Yamazaki;S. H. Ahn;S. B. Lee;S. K. Park;H. Lim;I. H. Park;D. Son;F. Barreiro;G. Garcia;C. Glasman;O. Gonzalez;L. Labarga;J. d. Peso;I. Redondo;J. Terron;M. Barbi;F. Corriveau;D. S. Hanna;A. Ochs;S. Padhi;D. G. Stairs;M. Wing;T. Tsurugai;A. Antonov;V. Bashkirov;M. Danilov;B. A. Dolgoshein;D. Gladkov;V. Sosnovtsev;S. Suchkov;R. K. Dementiev;P. F. Ermolov;Y. A. Golubkov;I. I. Katkov;L. A. Khein;N. A. Korotkova;I. A. Korzhavina;V. A. Kuzmin;O. Y. Lukina;A. S. Proskuryakov;L. M. Shcheglova;A. N. Solomin;N. N. Vlasov;S. A. Zotkin;C. Bokel;M. Botje;N. Brummer;J. Engelen;S. Grijpink;E. Koffeman;P. Kooijman;S. Schagen;A. v. Sighem;E. Tassi;H. Tiecke;N. Tuning;J. J. Velthuis;J. Vossebeld;L. Wiggers;E. d. Wolf;B. Bylsma;L. S. Durkin;J. Gilmore;C. M. Ginsburg;C. L. Kim;T. Y. Ling;S. Boogert;A. M. Cooper-Sarkar;R. C. E.;J. Grosse-Knetter;T. Matsushita;O. Ruske;M. R. Sutton;R. Walczak;A. Bertolin;R. Brugnera;R. Carlin;F. D. Corso;U. Dosselli;S. Dusini;S. Limentani;M. Morandin;M. Posocco;L. Stanco;R. Stroili;M. Turcato;C. Voci;L. Adamczyk;L. Iannotti;B. Y. Oh;J. R. Okrasinski;P. R. B.;W. S. Toothacker;J. J. Whitmore;Y. Iga;G. D'Agostini;G. Marini;A. Nigro;C. Cormack;J. C. Hart;N. A. McCubbin;T. P. Shah;D. Epperson;C. Heusch;H. F. W.;A. Seiden;R. Wichmann;D. C. Williams;N. Pavel;H. Abramowicz;S. Dagan;S. Kananov;A. Kreisel;A. Levy;T. Abe;T. Fusayasu;K. Um
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