Exclusive production of rho(0) and J/psi mesons in e(+)p collisions has been studied with the ZEUS detector in the kinematic range 0.25 < Q(2) < 50 GeV2, 20 < W < 167 GeV for the rho(0) data and 2 < Q(2) < 40 GeV2, 50 < IS' < 150 GeV for the J/psi data. Cross sections for exclusive rho(0) and J/psi, production have been measured as a function of Q2, W and t. The spin-density matrix elements r(00)(04), r(1-1)(1) and Rer(10)(5) have been determined for exclusive rho(0) production as well as r(00)(04) and r(1-1)(04) for exclusive J/psi production. The results are discussed in the context of theoretical models invoking soft and hard phenomena.

Exclusive electroproduction of rho(0) and J/psi mesons at HERA

CIRIO, Roberto;COSTA, Marco;MONACO, Vincenzo;PERONI, Cristiana;SACCHI, Roberto;SOLANO, Ada Maria;
1999-01-01

Abstract

Exclusive production of rho(0) and J/psi mesons in e(+)p collisions has been studied with the ZEUS detector in the kinematic range 0.25 < Q(2) < 50 GeV2, 20 < W < 167 GeV for the rho(0) data and 2 < Q(2) < 40 GeV2, 50 < IS' < 150 GeV for the J/psi data. Cross sections for exclusive rho(0) and J/psi, production have been measured as a function of Q2, W and t. The spin-density matrix elements r(00)(04), r(1-1)(1) and Rer(10)(5) have been determined for exclusive rho(0) production as well as r(00)(04) and r(1-1)(04) for exclusive J/psi production. The results are discussed in the context of theoretical models invoking soft and hard phenomena.
1999
6
603
627
http://dx.doi.org/10.1007/s100520050369
ZEUS; INELASTIC E(+)P SCATTERING; CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; LUND MONTE-CARLO; VECTOR-MESON; DIFFRACTIVE ELECTROPRODUCTION; PARTON DISTRIBUTIONS; PROTON-SCATTERING; ELASTIC PHOTOPRODUCTION; PHI PHOTOPRODUCTION
J. Breitweg;S. Chekanov;M. Derrick;D. Krakauer;S. Magill;D. Mikunas;B. Musgrave;J. Repond;R. Stanek;R. L. Talaga;R. Yoshida;H. Zhang;M. C. K.;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;A. Pesci;A. Polini;G. Sartorelli;Y. Z. Garcia;A. Zichichi;C. Amelung;A. Bornheim;I. Brock;K. Coboken;J. Crittenden;R. Deffner;M. Eckert;M. Grothe;H. Hartmann;K. Heinloth;L. Heinz;E. Hilger;H. P. Jakob;A. Kappes;U. F. Katz;R. Kerger;E. Paul;M. Pfeiffer;H. Schnurbusch;A. Weber;H. Wieber;D. S. Bailey;W. N. Cottingham;B. Foster;R. Hall-Wilton;G. P. Heath;H. F. Heath;J. D. McFall;D. Piccioni;D. G. Roff;J. Scott;R. J. Tapper;M. Capua;L. Iannotti;A. Mastroberardino;M. Schioppa;G. Susinno;J. Y. Kim;J. H. Lee;I. T. Lim;M. Y. Pac;A. Caldwell;N. Cartiglia;Z. Jing;W. Liu;B. Mellado;J. A. Parsons;S. Ritz;S. Sampson;F. Sciulli;P. B. Straub;Q. Zhu;P. Borzemski;J. Chwastowski;A. Eskreys;J. Figiel;K. Klimek;M. B. Przybycien;L. Zawiejski;L. Adamczyk;B. Bednarek;M. Bukowy;A. M. Czermak;K. Jelen;D. Kisielewska;T. Kowalski;M. Przybycien;E. Rulikowska-Zarebska;L. Suszycki;J. Zajac;Z. Dulinski;A. Kotanski;G. Abbiendi;L. A. T.;U. Behrens;H. Beier;J. K. Bienlein;K. Desler;G. Drews;U. Fricke;F. Goebel;P. Gottlicher;R. Graciani;T. Haas;W. Hain;G. F. Hartner;D. Hasell;K. Hebbel;K. F. Johnson;M. Kasemann;W. Koch;U. Kotz;H. Kowalski;L. Lindemann;B. Lohr;M. Martinez;J. Milewski;M. Milite;T. Monteiro;D. Notz;A. Pellegrino;F. Pelucchi;K. Piotrzkowski;M. Rohde;J. Roldan;J. J. Ryan;P. R. B.;A. A. Savin;U. Schneekloth;O. Schwarzer;F. Selonke;M. Sievers;S. Stonjek;B. Surrow;E. Tassi;D. Westphal;G. Wolf;U. Wollmer;C. Youngman;W. Zeuner;B. D. Burow;C. Coldewey;H. J. Grabosch;A. Meyer;S. Schlenstedt;G. Barbagli;E. Gallo;P. Pelfer;G. Maccarrone;L. Votano;A. Bamberger;S. Eisenhardt;P. Markun;H. Raach;T. Trefzger;S. Wolfle;J. T. Bromley;N. H. Brook;P. J. Bussey;A. T. Doyle;S. W. Lee;N. Macdonald;G. J. McCance;D. H. Saxon;L. E. Sinclair;I. O. Skillicorn;E. Strickland;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;T. C. Bacon;I. Butterworth;J. E. Cole;G. Howell;L. Lamberti;K. R. Long;D. B. Miller;N. Pavel;A. Prinias;J. K. Sedgbeer;D. Sideris;R. Walker;U. Mallik;S. M. Wang;J. T. Wu;P. Cloth;D. Filges;J. I. Fleck;T. Ishii;M. Kuze;I. Suzuki;K. Tokushuku;S. Yamada;K. Yamauchi;Y. Yamazaki;S. J. Hong;S. B. Lee;S. W. Nam;S. K. Park;H. Lim;I. H. Park;D. Son;F. Barreiro;J. P. Fernandez;G. Garcia;C. Glasman;J. M. Hernandez;L. Hervas;L. Labarga;J. d. Peso;J. Puga;I. Redondo;J. Terron;J. F. de;F. Corriveau;D. S. Hanna;J. Hartmann;W. N. Murray;A. Ochs;M. Riveline;D. G. Stairs;M. St-Laurent;T. Tsurugai;V. Bashkirov;B. A. Dolgoshein;A. Stifutkin;G. L. Bashindzhagyan;P. F. Ermolov;Y. A. Golubkov;L. A. Khein;N. A. Korotkova;I. A. Korzhavina;V. A. Kuzmin;O. Y. Lukina;A. S. Proskuryakov;L. M. Shcheglova;A. N. Solomin;S. A. Zotkin;C. Bokel;M. Botje;N. Brummer;J. Engelen;E. Koffeman;P. Kooijman;A. v. Sighem;H. Tiecke;N. Tuning;W. Verkerke;J. Vossebeld;L. Wiggers;E. d. Wolf;D. Acosta;B. Bylsma;L. S. Durkin;J. Gilmore;C. M. Ginsburg;C. L. Kim;T. Y. Ling;P. Nylander;T. A. Romanowski;H. E. Blaikley;R. J. Cashmore;A. M. Cooper-Sarkar;R. C. E.;J. K. Edmonds;J. Grosse-Knetter;N. Harnew;C. Nath;V. A. Noyes;A. Quadt;O. Ruske;J. R. Tickner;R. Walczak;D. S. Waters;A. Bertolin;R. Brugnera;R. Carlin;F. D. Corso;U. Dosselli;S. Limentani;M. Morandin;M. Posocco;L. Stanco;R. Stroili;C. Voci;B. Y. Oh;J. R. Okrasinski;W. S. Toothacker;J. J. Whitmore;Y. Iga;G. D'Agostini;G. Marini;A. Nigro;M. Raso;J. C. Hart;N. A. McCubbin;T. P. Shah;D. Epperson;C. Heusch;J. T. Rahn;H. F. W.;A. Seiden;R. Wichmann;D. C. Williams;H. Abramowicz;G. Briskin;S. Dagan;S. Kananov;A. Levy;T. Abe;T. Fusayasu;M. Inuzuka;K. Nagano;K. Umemori;T. Yamashita;R. Hamatsu;T. Hirose;K. Homma;S. Kitamura;T. Matsushita;T. Nishimura;M. Arneodo;R. Cirio;M. Costa;M. I. Ferrero;S. Maselli;V. Monaco;C. Peroni;M. C. Petrucci;M. Ruspa;R. Sacchi;A. Solano;A. Staiano;M. Dardo;D. C. Bailey;C. P. Fagerstroem;R. Galea;K. K. Joo;G. M. Levman;J. F. Martin;R. S. Orr;S. Polenz;A. Sabetfakhri;D. Simmons;J. M. Butterworth;C. D. Catterall;M. E. Hayes;E. A. Heaphy;T. W. Jones;J. B. Lane;R. L. Saunders;M. R. Sutton;M. Wing;J. Ciborowski;G. Grzelak;R. J. Nowak;J. M. Pawlak;R. Pawlak;B. Smalska;T. Tymieniecka;A. K. Wroblewski;J. A. Zakrzewski;A. F. Zarnecki;M. Adamus;O. Deppe;Y. Eisenberg;D. Hochman;U. Karshon;W. F. Badgett;D. Chapin;R. Cross;C. Foudas;S. Mattingly;D. D. Reeder;W. H. Smith;A. Vaiciulis;T. Wildschek;M. Wodarczyk;A. Deshpande;S. Dhawan;V. W. Hughes;S. Bhadra;W. R. Frisken;M. Khakzad;W. B. Schmidke
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