The production of c and b quarks gamma gamma collisions is studied with the L3 detector at LEP with 410 pb(-1) of data, collected at centre-of-mass energies from 189 GeV to 202 GeV. Hadronic final states containing c and b quarks are identified by detecting electrons or muons from their semileptonic decays. The cross sections sigma (e(+)e(-) --> e(+)e(-)c (c) over barX) and sigma (e(+)e(-) --> e(+)e(-)b (b) over barX) are measured and compared to next-to-leading order perturbative QCD calculations. The cross section of b production is measured in gamma gamma collisions for the first time. It is in excess of the QCD prediction by a factor of three. (C) 2001 Published by Elsevier Science B.V.

Measurements of the cross sections for open chasm and beauty production in gamma gamma collisions at root s=189-202 GeV / 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;A. Bajo;L. Baksay;A. Balandras;S. V. Baldew;S. Banerjee;S. Banerjee;A. Barczyk;R. Barillere;P. Bartalini;M. Basile;N. Batalova;R. Battiston;A. Bay;F. Becattini;U. Becker;F. Behner;L. Bellucci;R. Berbeco;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;F. Brochu;A. Buffini;A. Buijs;J. D. Burger;W. J. Burger;X. D. Cai;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;G. Chiefari;L. Cifarelli;F. Cindolo;C. Civinini;C. I;R. Clare;G. Coignet;N. Colino;S. Costantini;F. Cotorobai;B. d. la;A. Csilling;S. Cucciarelli;T. S. Dai;J. A. van;R. D'Alessandro;R. d. Asmundis;P. Deglon;A. Degre;K. Deiters;D. d. Volpe;E. Delmeire;P. Denes;F. DeNotaristefani;A. D. Salvo;M. Diemoz;M. Dierckxsens;D. v. Dierendonck;C. Dionisi;M. Dittmar;A. Dominguez;A. Doria;M. T. Dova;D. Duchesneau;D. Dufournaud;P. Duinker;D. I;H. E. Mamouni;A. Engler;F. J. Eppling;F. C. Erne;A. Ewers;P. Extermann;M. Fabre;M. A. Falagan;S. Falciano;A. Favara;J. Fay;O. Fedin;M. Felcini;T. Ferguson;H. Fesefeldt;E. Fiandrini;J. H. Field;F. Filthaut;P. H. Fisher;F. I;G. Forconi;K. Freudenreich;C. Furetta;Y. Galaktionov;S. N. Ganguli;P. Garcia-Abia;M. Gataullin;S. S. Gau;S. Gentile;N. Gheordanescu;S. Giagu;Z. F. Gong;G. Grenier;O. Grimm;M. W. Gruenewald;M. Guida;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;H. Sr;Y. Hu;I. I;B. N. Jin;L. W. Jones;P. d. Jong;J. I;R. A. Khan;D. Kafer;M. Kaur;M. N. Kienzle-Focacci;D. Kim;J. K. Kim;J. Kirkby;D. Kiss;W. Kittel;A. Klimentov;A. C. Konig;M. Kopal;A. Kopp;K. V;M. Kraber;R. W. Kraemer;W. Krenz;A. Kruger;A. Kunin;P. L. de;L. I;G. Landi;M. Lebeau;A. Lebedev;P. Lebrun;P. Lecomte;P. Lecoq;P. L. Coultre;H. J. Lee;J. M. Le;R. Leiste;P. Levtchenko;C. Li;S. Likhoded;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. Lugnier;L. Luminari;W. Lustermann;W. G. Ma;M. Maity;L. Malgeri;A. Malinin;C. Mana;D. Mangeol;J. Mans;G. Marian;J. P. Martin;F. Marzano;K. Mazumdar;R. R. McNeil;S. Mele;L. Merola;M. Meschini;W. J. Metzger;M. v. der;A. Mihul;H. Milcent;G. Mirabelli;J. Mnich;G. B. Mohanty;T. Moulik;G. S. Muanza;A. J. M.;B. Musicar;M. Musy;M. Napolitano;F. Nessi-Tedaldi;H. Newman;T. Niessen;A. Nisati;H. Nowak;R. Ofierzynski;G. Organtini;A. Oulianov;C. Palomares;D. Pandoulas;S. Paoletti;P. Paolucci;R. Paramatti;H. K. Park;I. H. Park;G. Passaleva;S. Patricelli;T. Paul;M. Pauluzzi;C. Paus;F. Pauss;M. Pedace;S. Pensotti;D. Perret-Gallix;B. Petersen;D. Piccolo;F. Pierella;M. Pieri;P. A. Piroue;E. Pistolesi;P. V;M. Pohl;P. V;H. Postema;J. Pothier;D. O. Prokofiev;D. Prokofiev;J. Quartieri;G. Rahal-Callot;M. A. Rahaman;P. Raics;N. Raja;R. Ramelli;P. G. Rancoita;R. Ranieri;A. Raspereza;G. Raven;P. Razis;D. Ren;M. Rescigno;S. Reucroft;S. Riemann;K. Riles;J. Rodin;B. P. Roe;L. Romero;A. Rosca;S. Rosier-Lees;S. Roth;C. Rosenbleck;J. A. Rubio;G. Ruggiero;H. Rykaczewski;S. Saremi;S. Sarkar;J. Salicio;E. Sanchez;M. P. Sanders;C. Schafer;S. V;S. Schmidt-Kaerst;D. Schmitz;H. Schopper;D. J. Schotanus;G. Schwering;C. Sciacca;A. Seganti;L. Servoli;S. Shevchenko;N. Shivarov;S. V;E. Shumilov;A. Shvorob;T. Siedenburg;D. Son;B. Smith;P. Spillantini;M. Steuer;D. P. Stickland;A. Stone;B. Stoyanov;A. Straessner;K. Sudhakar;G. Sultanov;L. Z. Sun;S. Sushkov;H. Suter;J. D. Swain;Z. Szillasi;T. Sztaricskai;X. W. Tang;L. Tauscher;L. Taylor;B. Tellili;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;V. I;D. Vicinanza;G. Viertel;S. Villa;M. Vivargent;S. Vlachos;V. I;H. Vogel;H. Vogt;V. I;A. A. Vorobyov;A. Vorvolakos;M. Wadhwa;W. Wallraff;M. 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;J. Yamamoto;B. Z. Yang;C. G. Yang;H. J. Yang;M. Yang;J. B. Ye;S. C. Yeh;A. Zalite;Y. Zalite;Z. P. Zhang;G. Y. Zhu;R. Y. Zhu;A. Zichichi;G. Zilizi;B. Zimmermann;M. Zoller. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 503:(2001), pp. 10-20. [10.1016/S0370-2693(01)00134-4]

Measurements of the cross sections for open chasm and beauty production in gamma gamma collisions at root s=189-202 GeV

ADRIANI, OSCAR;BECATTINI, FRANCESCO;D'ALESSANDRO, RAFFAELLO;
2001

Abstract

The production of c and b quarks gamma gamma collisions is studied with the L3 detector at LEP with 410 pb(-1) of data, collected at centre-of-mass energies from 189 GeV to 202 GeV. Hadronic final states containing c and b quarks are identified by detecting electrons or muons from their semileptonic decays. The cross sections sigma (e(+)e(-) --> e(+)e(-)c (c) over barX) and sigma (e(+)e(-) --> e(+)e(-)b (b) over barX) are measured and compared to next-to-leading order perturbative QCD calculations. The cross section of b production is measured in gamma gamma collisions for the first time. It is in excess of the QCD prediction by a factor of three. (C) 2001 Published by Elsevier Science B.V.
2001
503
10
20
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;A. Bajo;L. Baksay;A. Balandras;S. V. Baldew;S. Banerjee;S. Banerjee;A. Barczyk;R. Barillere;P. Bartalini;M. Basile;N. Batalova;R. Battiston;A. Bay;F. Becattini;U. Becker;F. Behner;L. Bellucci;R. Berbeco;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;F. Brochu;A. Buffini;A. Buijs;J. D. Burger;W. J. Burger;X. D. Cai;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;G. Chiefari;L. Cifarelli;F. Cindolo;C. Civinini;C. I;R. Clare;G. Coignet;N. Colino;S. Costantini;F. Cotorobai;B. d. la;A. Csilling;S. Cucciarelli;T. S. Dai;J. A. van;R. D'Alessandro;R. d. Asmundis;P. Deglon;A. Degre;K. Deiters;D. d. Volpe;E. Delmeire;P. Denes;F. DeNotaristefani;A. D. Salvo;M. Diemoz;M. Dierckxsens;D. v. Dierendonck;C. Dionisi;M. Dittmar;A. Dominguez;A. Doria;M. T. Dova;D. Duchesneau;D. Dufournaud;P. Duinker;D. I;H. E. Mamouni;A. Engler;F. J. Eppling;F. C. Erne;A. Ewers;P. Extermann;M. Fabre;M. A. Falagan;S. Falciano;A. Favara;J. Fay;O. Fedin;M. Felcini;T. Ferguson;H. Fesefeldt;E. Fiandrini;J. H. Field;F. Filthaut;P. H. Fisher;F. I;G. Forconi;K. Freudenreich;C. Furetta;Y. Galaktionov;S. N. Ganguli;P. Garcia-Abia;M. Gataullin;S. S. Gau;S. Gentile;N. Gheordanescu;S. Giagu;Z. F. Gong;G. Grenier;O. Grimm;M. W. Gruenewald;M. Guida;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;H. Sr;Y. Hu;I. I;B. N. Jin;L. W. Jones;P. d. Jong;J. I;R. A. Khan;D. Kafer;M. Kaur;M. N. Kienzle-Focacci;D. Kim;J. K. Kim;J. Kirkby;D. Kiss;W. Kittel;A. Klimentov;A. C. Konig;M. Kopal;A. Kopp;K. V;M. Kraber;R. W. Kraemer;W. Krenz;A. Kruger;A. Kunin;P. L. de;L. I;G. Landi;M. Lebeau;A. Lebedev;P. Lebrun;P. Lecomte;P. Lecoq;P. L. Coultre;H. J. Lee;J. M. Le;R. Leiste;P. Levtchenko;C. Li;S. Likhoded;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. Lugnier;L. Luminari;W. Lustermann;W. G. Ma;M. Maity;L. Malgeri;A. Malinin;C. Mana;D. Mangeol;J. Mans;G. Marian;J. P. Martin;F. Marzano;K. Mazumdar;R. R. McNeil;S. Mele;L. Merola;M. Meschini;W. J. Metzger;M. v. der;A. Mihul;H. Milcent;G. Mirabelli;J. Mnich;G. B. Mohanty;T. Moulik;G. S. Muanza;A. J. M.;B. Musicar;M. Musy;M. Napolitano;F. Nessi-Tedaldi;H. Newman;T. Niessen;A. Nisati;H. Nowak;R. Ofierzynski;G. Organtini;A. Oulianov;C. Palomares;D. Pandoulas;S. Paoletti;P. Paolucci;R. Paramatti;H. K. Park;I. H. Park;G. Passaleva;S. Patricelli;T. Paul;M. Pauluzzi;C. Paus;F. Pauss;M. Pedace;S. Pensotti;D. Perret-Gallix;B. Petersen;D. Piccolo;F. Pierella;M. Pieri;P. A. Piroue;E. Pistolesi;P. V;M. Pohl;P. V;H. Postema;J. Pothier;D. O. Prokofiev;D. Prokofiev;J. Quartieri;G. Rahal-Callot;M. A. Rahaman;P. Raics;N. Raja;R. Ramelli;P. G. Rancoita;R. Ranieri;A. Raspereza;G. Raven;P. Razis;D. Ren;M. Rescigno;S. Reucroft;S. Riemann;K. Riles;J. Rodin;B. P. Roe;L. Romero;A. Rosca;S. Rosier-Lees;S. Roth;C. Rosenbleck;J. A. Rubio;G. Ruggiero;H. Rykaczewski;S. Saremi;S. Sarkar;J. Salicio;E. Sanchez;M. P. Sanders;C. Schafer;S. V;S. Schmidt-Kaerst;D. Schmitz;H. Schopper;D. J. Schotanus;G. Schwering;C. Sciacca;A. Seganti;L. Servoli;S. Shevchenko;N. Shivarov;S. V;E. Shumilov;A. Shvorob;T. Siedenburg;D. Son;B. Smith;P. Spillantini;M. Steuer;D. P. Stickland;A. Stone;B. Stoyanov;A. Straessner;K. Sudhakar;G. Sultanov;L. Z. Sun;S. Sushkov;H. Suter;J. D. Swain;Z. Szillasi;T. Sztaricskai;X. W. Tang;L. Tauscher;L. Taylor;B. Tellili;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;V. I;D. Vicinanza;G. Viertel;S. Villa;M. Vivargent;S. Vlachos;V. I;H. Vogel;H. Vogt;V. I;A. A. Vorobyov;A. Vorvolakos;M. Wadhwa;W. Wallraff;M. 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;J. Yamamoto;B. Z. Yang;C. G. Yang;H. J. Yang;M. Yang;J. B. Ye;S. C. Yeh;A. Zalite;Y. Zalite;Z. P. Zhang;G. Y. Zhu;R. Y. Zhu;A. Zichichi;G. Zilizi;B. Zimmermann;M. Zoller
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/774959
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