Data di Pubblicazione:
2001
Abstract:
Three-jet production in the reaction ep --> eXp has been studied with the ZEUS detector at HERA using an integrated luminosity of 42.74 pb(-1).The data were measured in the kinematic region 5 < Q(2) < 100 GeV(2), 200 < W < 250 GeV and 23 < M(X) < 40 GeV. The diffractive signal was selected by requiring a large rapidity gap in the outgoing proton direction. Jets were reconstructed in the centre-of-mass system of X using the exclusive k(T)-algorithm. A sample of three-jet events in diffraction has been identified. Differential cross sections were measured as a function of the jet pseudorapidity and jet transverse momentum with respect to the virtual photon-pomeron axis. The jets going in the pomeron direction are broader than those going in the virtual-photon direction. This is consistent with models predicting that gluons a-re predominantly produced in the pomeron direction and quarks in the virtual-photon direction. (C) 2001 Elsevier Science B.V. All rights reserved.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
LARGE-RAPIDITY-GAP; MONTE-CARLO GENERATOR; CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; COLOR DIPOLE MODEL; CROSS-SECTIONS; E+E-ANNIHILATION; QCD CASCADES; FINAL-STATE; EVENTS
Elenco autori:
S. Chekanov;M. Derrick;D. Krakauer;S. Magill;B. Musgrave;A. Pellegrino;J. Repond;R. Yoshida;M. C. K.;P. Antonioli;G. Bari;M. Basile;L. Bellagamba;D. Boscherini;A. Bruni;G. Bruni;G. C. Romeo;L. Cifarelli;F. Cindolo;A. Contin;M. Corradi;S. D. Pasquale;P. Giusti;G. Iacobucci;G. Levi;A. Margotti;T. Massam;R. Nania;F. Palmonari;A. Pesci;G. Sartorelli;A. Zichichi;G. Aghuzumtsyan;I. Brock;S. Goers;H. Hartmann;E. Hilger;P. Irrgang;H. P. Jakob;A. Kappes;U. F. Katz;R. Kerger;O. Kind;E. Paul;J. Rautenberg;H. Schnurbusch;A. Stifutkin;J. Tandler;K. C. Voss;A. Weber;H. Wieber;D. S. Bailey;N. H. Brook;J. E. Cole;B. Foster;G. P. Heath;H. F. Heath;S. Robins;E. Ridrigues;J. Scott;R. J. Tapper;M. Wing;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;M. Helbich;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;M. B. Przybycien;P. Stopa;L. Zawiejski;B. Bednarek;K. Jelen;D. Kisielewska;A. M. Kowal;M. Kowal;T. Kowalski;B. Mindur;M. Przybycien;E. Rulikowska-Zarebska;L. Suszycki;D. Szuba;L. A. T.;U. Behrens;K. Borras;V. Chiochia;J. Crittenden;D. Dannheim;K. Desler;G. Drews;A. Fox-Murphy;U. Fricke;A. Geiser;F. Goebel;P. Gottlicher;R. Graciani;T. Haas;W. Hain;G. F. Hartner;K. Hebbel;S. Hillert;W. Koch;U. Kotz;H. Kowalski;H. Labes;B. Lohr;R. Mankel;J. Martens;M. Martinez;M. Milite;M. Moritz;D. Notz;M. C. Petrucci;A. Polini;U. Schneekloth;F. Selonke;S. Stonjek;G. Wolf;U. Wollmer;J. J. Whitmore;R. Wichmann;C. Youngman;W. Zeuner;C. Coldewey;A. L. D.;A. Meyer;S. Schlenstedt;G. Barbagli;E. Gallo;P. G. Pelfer;A. Bamberger;A. Benen;N. Coppola;P. Markun;H. Raach;S. Wolfle;M. Bell;P. J. Bussey;A. T. Doyle;C. Glasman;S. W. Lee;A. Lupi;G. J. McCance;D. H. Saxon;I. O. Skillicorn;B. Bodmann;N. Gendner;U. Holm;H. Salehi;K. Wick;A. Yildirim;A. Ziegler;T. Carli;A. Garfagnini;I. Gialas;E. Lohrmann;C. Foudas;R. Goncalo;K. R. Long;F. Metlica;D. B. Miller;A. D. Tapper;R. Walker;P. Cloth;D. Filges;M. Kuze;K. Nagano;K. Tokushuku;S. Yamada;Y. Yamazaki;A. N. Barakbaev;E. G. Boos;N. S. Pokrovskiy;B. O. Zhautykov;S. H. Ahn;S. B. Lee;S. K. Park;H. Lim;D. Son;F. Barreiro;G. Garcia;O. Gonzalez;L. Labarga;J. d. Peso;I. Redondo;J. Terron;M. Vazquez;M. Barbi;A. Bertolin;F. Corriveau;A. Ochs;S. Padhi;D. G. Stairs;T. Tsurugai;A. Antonov;V. Bashkirov;P. 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;B. B. Levchenko;O. Y. Lukina;A. S. Proskuryakov;L. M. Shcheglova;A. N. Solomin;N. N. Vlasov;S. A. Zotkin;C. Bokel;J. Engelen;S. Grijpink;E. Maddox;E. Koffeman;P. Kooijman;S. Schagen;E. Tassi;H. Tiecke;N. Tuning;J. J. Velthuis;L. Wiggers;E. d. Wolf;N. Brummer;B. Bylsma;L. S. Durkin;J. Gilmore;C. M. Ginsberg;C. L. Kim;T. Y. Ling;S. Boogert;A. M. Cooper-Sarkar;R. C. E.;J. Ferrando;J. Grosse-Knetter;T. Matsushita;M. Rigby;O. Ruske;M. R. Sutton;R. Walczak;R. Brugnera;R. Carlin;F. D. Corso;S. Dusini;S. Limentani;A. Longhin;A. Parenti;M. Posocco;L. Stanco;M. Turcato;L. Adamczyk;L. Iannotti;B. Y. Oh;P. R. B.;W. S. Toothacker;Y. Iga;G. D'Agostini;G. Marini;A. Nigro;C. Cormack;J. C. Hart;N. A. McCubbin;D. Epperson;C. Heusch;H. F. W.;A. Seiden;D. C. Williams;I. H. Park;N. Pavel;H. Abramowicz;S. Dagan;A. Gabareen;S. Kananov;A. Kreisel;A. Levy;T. Abe;T. Fusayasu;T. Kohno;K. Umemori;T. Yamashita;R. Hamatsu;T. Hirose;M. Inuzuka;S. Kitamura;K. Matsuzawa;T. Nishimura;M. Arneodo;N. Cartiglia;R. Cirio;M. Costa;M. I. Ferrero;S. Maselli;V. Monaco;C. Peroni;M. Ruspa;R. Sacchi;A. Solano;A. Staiano;D. C. Bailey;C. P.
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