Measurements of the two-photon interaction e(+)e(-) --> e(+)e(-) + hadrons at root s similar or equal to 91 GeV and root s similar or equal to 183 GeV are presented. The double-tag events, collected with the L3 detector, correspond to integrated luminosities of 140 pb(-1) at 91 GeV and 52 ph(-1) at 183 GeV. The cross-section of gamma*gamma* collisions has been measured at [Q(2)] = 3.5 GeV2 and [Q(2)] = 14 GeV2. The data agree well with predictions based on perturbative QCD, while the Quark Parton Model alone is insufficient to describe the data. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
Measurement of the cross-section for the process gamma*gamma* -> hadrons at LEP / M. Acciarri;P. Achard;O. Adriani;M. Aguilar-Benitez;J. Alcaraz;G. Alemanni;J. Allaby;A. Aloisio;M. G. Alviggi;G. Ambrosi;H. Anderhub;V. P. Andreev;T. Angelescu;F. Anselmo;A. Arefiev;T. Azemoon;T. Aziz;P. Bagnaia;L. Baksay;A. Balandras;R. C. Ball;S. Banerjee;S. Banerjee;K. Banicz;A. Barczyk;R. Barillere;L. Barone;P. Bartalini;M. Basile;R. Battiston;A. Bay;F. Becattini;U. Becker;F. Behner;J. Berdugo;P. Berges;B. Bertucci;B. L. Betev;S. Bhattacharya;M. Biasini;A. Biland;J. J. Blaising;S. C. Blyth;G. J. Bobbink;A. Bohm;L. Boldizsar;B. Borgia;D. Bourilkov;M. Bourquin;S. Braccini;J. G. Branson;V. Brigljevic;F. Brochu;A. Buffini;A. Buijs;J. D. Burger;W. J. Burger;J. Busenitz;A. Button;X. D. Cai;M. Campanelli;M. Capell;G. C. Romeo;G. Carlino;A. M. Cartacci;J. Casaus;G. Castellini;F. Cavallari;N. Cavallo;C. Cecchi;M. Cerrada;F. Cesaroni;M. Chamizo;Y. H. Chang;U. K. Chaturvedi;M. Chemarin;A. Chen;G. Chen;G. M. Chen;H. F. Chen;H. S. Chen;X. Chereau;G. Chiefari;L. Cifarelli;F. Cindolo;C. Civinini;I. Clare;R. Clare;G. Coignet;A. P. Colijn;N. Colino;S. Costantini;F. Cotorobai;B. d. la;A. Csilling;T. S. Dai;J. A. van;R. D'Alessandro;R. d. Asmundis;P. Deglon;A. Degre;K. Deiters;D. d. Volpe;P. Denes;F. DeNotaristefani;A. D. Salvo;M. Diemoz;D. v. Dierendonck;F. D. Lodovico;C. Dionisi;M. Dittmar;A. Dominguez;A. Doria;M. T. Dova;D. Duchesneau;D. Dufournand;P. Duinker;I. Duran;H. E. Mamouni;A. Engler;F. J. Eppling;F. C. Erne;P. Extermann;M. Fabre;R. Faccini;M. A. Falagan;S. Falciano;A. Favara;J. Fay;O. Fedin;M. Felcini;T. Ferguson;F. Ferroni;F. Fesefeldt;E. Fiandrini;J. H. Field;F. Filthaut;P. H. Fisher;I. Fisk;G. Ferconi;L. Fredj;K. Freudenreich;C. Furetta;Y. Galaktionov;S. N. Ganguli;P. Garcia-Abia;M. Gataullin;S. S. Gau;S. Gentile;N. Gheordanescu;S. Giagu;S. Goldfarb;Z. F. Gong;M. W. Gruenewald;R. v. Gulik;V. K. Gupta;A. Gurtu;L. J. Gutay;D. Haas;A. Hasan;D. Hatzifotiadou;T. Hebbeker;A. Herve;P. Hidas;J. Hirschfelder;H. Hofer;G. Holzner;H. Hoorani;S. R. Hou;I. Iashvili;B. N. Jin;L. W. Jones;P. d. Jong;I. Josa-Mutuberria;R. A. Khan;D. Kamrad;J. S. Kapustinsky;M. Kaur;M. N. Kienzle-Focacci;D. Kim;D. H. Kim;J. K. Kim;S. C. Kim;W. W. Kinnison;J. Kirkby;D. Kiss;W. Kittel;A. Klimentov;A. C. Konig;A. Kopp;I. Korolko;V. Koutsenko;R. W. Kraemer;W. Krenz;A. Kunin;P. Lacentre;P. L. de;I. Laktineh;G. Landi;C. Lapoint;K. Lassila-Perini;P. Laurikainen;A. Lavorato;M. Lebeau;A. Lebedev;P. Lebrun;P. Lecomte;P. Lecoq;P. L. Coultre;H. J. Lee;J. M. Le;R. Leiste;E. Leonardi;P. Levtchenko;C. Li;C. H. Lin;W. T. Lin;F. L. Linde;L. Lista;Z. A. Liu;W. Lohmann;E. Longo;Y. S. Lu;K. Lubelsmeyer;C. Luci;D. Luckey;L. Luminari;W. Lustermann;W. G. Ma;M. Maity;G. Majumder;L. Malgeri;A. Malinin;C. Mana;D. Mangeol;P. Marchesini;G. Marian;J. P. Martin;F. Marzano;G. G. G.;K. Mazumdar;R. R. McNeil;S. Mele;L. Merola;M. Meschini;W. J. Metzger;M. v. der;D. Migani;A. Mihul;H. Milcent;G. Mirabelli;J. Mnich;P. Molnar;B. Monteleoni;T. Moulik;G. S. Muanza;F. Muheim;A. J. M.;S. Nahn;M. Napolitano;F. Nessi-Tedaldi;H. Newman;T. Niessen;A. Nippe;A. Nisati;H. Nowak;Y. D. Oh;G. Organtini;R. Ostonen;C. Palomares;D. Pandoulas;S. Paoletti;P. Paolucci;H. K. Park;I. H. Park;G. Pascale;G. Passaleva;S. Patricelli;T. Paul;M. Pauluzzi;C. Paus;F. Pauss;D. Peach;M. Pedace;Y. J. Pei;S. Pensotti;D. Perret-Gallix;B. Petersen;S. Petrak;D. Piccolo;M. Pieri;P. A. Piroue;E. Pistolesi;V. Plyaskin;M. Pohl;V. Pojidaev;H. Postema;J. Pothier;N. Produit;D. Prokofiev;J. Quartieri;G. Rahal-Callot;N. Raja;P. G. Rancoita;G. Raven;P. Razis;D. Ren;M. Rescigno;S. Reucroft;T. v. Rhee;S. Riemann;K. Riles;A. Robohm;J. Rodin;B. P. Roe;L. Romero;S. Rosier-Lees;J. A. Rubio;D. Ruschmeier;H. Rykaczewski;S. Sakar;J. Salicio;E. Sanchez;M. P. Sanders;M. E. Sarakinos;C. Schafer;V. Schegelsky;S. Schmidt-Kaerst;D. Schmitz;N. Scholz;H. Schopper;D. J. Schotanus;J. Schwenke;G. Schwering;C. Sciacca;D. Sciarrino;L. Servoli;S. Shevchenko;N. Shivarov;V. Shoutko;J. Shukla;E. Shumilov;A. Shvorob;T. Siedenburg;D. Son;B. Smith;P. Spillantini;M. Steuer;D. P. Stickland;A. Stone;H. Stone;B. Stoyanov;A. Straessner;K. Sudhakar;G. Sultanov;L. Z. Sun;H. Suter;J. D. Swain;Z. Szillasi;X. W. Tang;L. Tauscher;L. Taylor;C. Timmermans;S. C. C.;S. M. Ting;S. C. Tonwar;J. Toth;C. Tully;K. L. Tung;Y. Uchida;J. Ulbricht;E. Valente;G. Vesztergombi;I. Vetlitsky;G. Viertel;S. Villa;M. Vivargent;S. Vlachos;H. Vogel;H. Vogt;I. Vorobiev;A. A. Vorobyov;A. Vorvolakos;M. Wadhwa;W. Wallraff;J. C. Wang;X. L. Wang;Z. M. Wang;A. Weber;M. Weber;P. Wienemann;H. Wilkens;S. X. Wu;S. Wynhoff;L. Xia;Z. Z. Xu;B. Z. Yang;C. G. Yang;H. J. Yang;M. Yang;J. B. Ye;S. C. Yeh;J. M. You;A. Zalite;Y. Zalite;P. Zemp;Z. P. Zhang;G. Y. Zhu;R. Y. Zhu;A. Zichichi;F. Ziegler;G. Zilizi;M. Zoller. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 453:(1999), pp. 333-342. [10.1016/S0370-2693(99)00278-6]
Measurement of the cross-section for the process gamma*gamma* -> hadrons at LEP
ADRIANI, OSCAR;BECATTINI, FRANCESCO;D'ALESSANDRO, RAFFAELLO;
1999
Abstract
Measurements of the two-photon interaction e(+)e(-) --> e(+)e(-) + hadrons at root s similar or equal to 91 GeV and root s similar or equal to 183 GeV are presented. The double-tag events, collected with the L3 detector, correspond to integrated luminosities of 140 pb(-1) at 91 GeV and 52 ph(-1) at 183 GeV. The cross-section of gamma*gamma* collisions has been measured at [Q(2)] = 3.5 GeV2 and [Q(2)] = 14 GeV2. The data agree well with predictions based on perturbative QCD, while the Quark Parton Model alone is insufficient to describe the data. (C) 1999 Published by Elsevier Science B.V. All rights reserved.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.