The rate of gluon splitting into pairs in hadronic Z decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is %.

A measurement of the gluon splitting rate into pairs in hadronic Z decays / A. Heister;S. Schael;R. Barate;R. Brunelière;I. De Bonis;D. Decamp;C. Goy;S. Jezequel;J.-P. Lees;F. Martin;E. Merle;M.-N. Minard;B. Pietrzyk;B. Trocmé;S. Bravo;M.P. Casado;M. Chmeissani;J.M. Crespo;E. Fernandez;M. Fernandez-Bosman;Ll. Garrido;M. Martinez;A. Pacheco;H. Ruiz;A. Colaleo;D. Creanza;N. De Filippis;M. de Palma;G. Iaselli;G. Maggi;M. Maggi;S. Nuzzo;A. Ranieri;G. Raso;F. Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;A. Tricomi;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;D. Abbaneo;T. Barklow;O. Buchmüller;M. Cattaneo;F. Cerutti;B. Clerbaux;H. Drevermann;R.W. Forty;M. Frank;F. Gianotti;J.B. Hansen;J. Harvey;D.E. Hutchcroft;P. Janot;B. Jost;M. Kado;P. Mato;A. Moutoussi;F. Ranjard;L. Rolandi;D. Schlatter;G. Sguazzoni;W. Tejessy;F. Teubert;A. Valassi;I. Videau;F. Badaud;S. Dessagne;A. Falvard;D. Fayolle;P. Gay;J. Jousset;B. Michel;S. Monteil;D. Pallin;J.M. Pascolo;P. Perret;J.D. Hansen;J.R. Hansen;P.H. Hansen;A. Kraan;B.S. Nilsson;A. Kyriakis;C. Markou;E. Simopoulou;A. Vayaki;K. Zachariadou;A. Blondel;J.-C. Brient;F. Machefert;A. Rougé;M. Swynghedauw;R. Tanaka;H. Videau;V. Ciulli;E. Focardi;G. Parrini;A. Antonelli;M. Antonelli;G. Bencivenni;F. Bossi;G. Capon;V. Chiarella;P. Laurelli;G. Mannocchi;G.P. Murtas;L. Passalacqua;J. Kennedy;J.G. Lynch;P. Negus;V. O'Shea;A.S. Thompson;S. Wasserbaech;R. Cavanaugh;S. Dhamotharan;C. Geweniger;P. Hanke;V. Hepp;E.E. Kluge;G. Leibenguth;A. Putzer;H. Stenzel;K. Tittel;M. Wunsch;R. Beuselinck;W. Cameron;G. Davies;P.J. Dornan;M. Girone;R.D. Hill;N. Marinelli;J. Nowell;S.A. Rutherford;J.K. Sedgbeer;J.C. Thompson;R. White;V.M. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;E. Bouhova-Thacker;C.K. Bowdery;D.P. Clarke;G. Ellis;A.J. Finch;F. Foster;G. Hughes;R.W.L. Jones;M.R. Pearson;N.A. Robertson;M. Smizanska;O. van der Aa;C. Delaere;V. Lemaitre;U. Blumenschein;F. Hölldorfer;K. Jakobs;F. Kayser;K. Kleinknecht;A.-S. Müller;B. Renk;H.-G. Sander;S. Schmeling;H. Wachsmuth;C. Zeitnitz;T. Ziegler;A. Bonissent;P. Coyle;C. Curtil;A. Ealet;D. Fouchez;P. Payre;A. Tilquin;F. Ragusa;A. David;H. Dietl;G. Ganis;K. Hüttmann;G. Lütjens;W. Männer;H.-G. Moser;R. Settles;M. Villegas;G. Wolf;J. Boucrot;O. Callot;M. Davier;L. Duflot;J.-F. Grivaz;Ph. Heusse;A. Jacholkowska;L. Serin;J.-J. Veillet;P. Azzurri;G. Bagliesi;T. Boccali;L. Foà;A. Giammanco;A. Giassi;F. Ligabue;A. Messineo;F. Palla;G. Sanguinetti;A. Sciabà;P. Spagnolo;R. Tenchini;A. Venturi;P.G. Verdini;O. Awunor;G.A. Blair;G. Cowan;A. Garcia-Bellido;M.G. Green;L.T. Jones;T. Medcalf;A. Misiejuk;J.A. Strong;P. Teixeira-Dias;R.W. Clifft;T.R. Edgecock;P.R. Norton;I.R. Tomalin;J.J. Ward;B. Bloch-Devaux;D. Boumediene;P. Colas;B. Fabbro;E. Lançon;M.-C. Lemaire;E. Locci;P. Perez;J. Rander;B. Tuchming;B. Vallage;N. Konstantinidis;A.M. Litke;G. Taylor;C.N. Booth;S. Cartwright;F. Combley;P.N. Hodgson;M. Lehto;L.F. Thompson;A. Böhrer;S. Brandt;C. Grupen;J. Hess;A. Ngac;G. Prange;C. Borean;G. Giannini;H. He;J. Putz;J. Rothberg;S.R. Armstrong;K. Berkelman;K. Cranmer;D.P.S. Ferguson;Y. Gao;S. González;O.J. Hayes;H. Hu;S. Jin;J. Kile;P.A. McNamara;J. Nielsen;Y.B. Pan;J.H. von Wimmersperg-Toeller;W. Wiedenmann;J. Wu;Sau Lan Wu;X. Wu;G. Zobernig;G. Dissertori. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 561:(2003), pp. 213-224. [10.1016/S0370-2693(03)00495-7]

A measurement of the gluon splitting rate into pairs in hadronic Z decays

FOCARDI, ETTORE;CIULLI, VITALIANO;
2003

Abstract

The rate of gluon splitting into pairs in hadronic Z decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is %.
561
213
224
A. Heister;S. Schael;R. Barate;R. Brunelière;I. De Bonis;D. Decamp;C. Goy;S. Jezequel;J.-P. Lees;F. Martin;E. Merle;M.-N. Minard;B. Pietrzyk;B. Trocmé;S. Bravo;M.P. Casado;M. Chmeissani;J.M. Crespo;E. Fernandez;M. Fernandez-Bosman;Ll. Garrido;M. Martinez;A. Pacheco;H. Ruiz;A. Colaleo;D. Creanza;N. De Filippis;M. de Palma;G. Iaselli;G. Maggi;M. Maggi;S. Nuzzo;A. Ranieri;G. Raso;F. Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;A. Tricomi;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;D. Abbaneo;T. Barklow;O. Buchmüller;M. Cattaneo;F. Cerutti;B. Clerbaux;H. Drevermann;R.W. Forty;M. Frank;F. Gianotti;J.B. Hansen;J. Harvey;D.E. Hutchcroft;P. Janot;B. Jost;M. Kado;P. Mato;A. Moutoussi;F. Ranjard;L. Rolandi;D. Schlatter;G. Sguazzoni;W. Tejessy;F. Teubert;A. Valassi;I. Videau;F. Badaud;S. Dessagne;A. Falvard;D. Fayolle;P. Gay;J. Jousset;B. Michel;S. Monteil;D. Pallin;J.M. Pascolo;P. Perret;J.D. Hansen;J.R. Hansen;P.H. Hansen;A. Kraan;B.S. Nilsson;A. Kyriakis;C. Markou;E. Simopoulou;A. Vayaki;K. Zachariadou;A. Blondel;J.-C. Brient;F. Machefert;A. Rougé;M. Swynghedauw;R. Tanaka;H. Videau;V. Ciulli;E. Focardi;G. Parrini;A. Antonelli;M. Antonelli;G. Bencivenni;F. Bossi;G. Capon;V. Chiarella;P. Laurelli;G. Mannocchi;G.P. Murtas;L. Passalacqua;J. Kennedy;J.G. Lynch;P. Negus;V. O'Shea;A.S. Thompson;S. Wasserbaech;R. Cavanaugh;S. Dhamotharan;C. Geweniger;P. Hanke;V. Hepp;E.E. Kluge;G. Leibenguth;A. Putzer;H. Stenzel;K. Tittel;M. Wunsch;R. Beuselinck;W. Cameron;G. Davies;P.J. Dornan;M. Girone;R.D. Hill;N. Marinelli;J. Nowell;S.A. Rutherford;J.K. Sedgbeer;J.C. Thompson;R. White;V.M. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;E. Bouhova-Thacker;C.K. Bowdery;D.P. Clarke;G. Ellis;A.J. Finch;F. Foster;G. Hughes;R.W.L. Jones;M.R. Pearson;N.A. Robertson;M. Smizanska;O. van der Aa;C. Delaere;V. Lemaitre;U. Blumenschein;F. Hölldorfer;K. Jakobs;F. Kayser;K. Kleinknecht;A.-S. Müller;B. Renk;H.-G. Sander;S. Schmeling;H. Wachsmuth;C. Zeitnitz;T. Ziegler;A. Bonissent;P. Coyle;C. Curtil;A. Ealet;D. Fouchez;P. Payre;A. Tilquin;F. Ragusa;A. David;H. Dietl;G. Ganis;K. Hüttmann;G. Lütjens;W. Männer;H.-G. Moser;R. Settles;M. Villegas;G. Wolf;J. Boucrot;O. Callot;M. Davier;L. Duflot;J.-F. Grivaz;Ph. Heusse;A. Jacholkowska;L. Serin;J.-J. Veillet;P. Azzurri;G. Bagliesi;T. Boccali;L. Foà;A. Giammanco;A. Giassi;F. Ligabue;A. Messineo;F. Palla;G. Sanguinetti;A. Sciabà;P. Spagnolo;R. Tenchini;A. Venturi;P.G. Verdini;O. Awunor;G.A. Blair;G. Cowan;A. Garcia-Bellido;M.G. Green;L.T. Jones;T. Medcalf;A. Misiejuk;J.A. Strong;P. Teixeira-Dias;R.W. Clifft;T.R. Edgecock;P.R. Norton;I.R. Tomalin;J.J. Ward;B. Bloch-Devaux;D. Boumediene;P. Colas;B. Fabbro;E. Lançon;M.-C. Lemaire;E. Locci;P. Perez;J. Rander;B. Tuchming;B. Vallage;N. Konstantinidis;A.M. Litke;G. Taylor;C.N. Booth;S. Cartwright;F. Combley;P.N. Hodgson;M. Lehto;L.F. Thompson;A. Böhrer;S. Brandt;C. Grupen;J. Hess;A. Ngac;G. Prange;C. Borean;G. Giannini;H. He;J. Putz;J. Rothberg;S.R. Armstrong;K. Berkelman;K. Cranmer;D.P.S. Ferguson;Y. Gao;S. González;O.J. Hayes;H. Hu;S. Jin;J. Kile;P.A. McNamara;J. Nielsen;Y.B. Pan;J.H. von Wimmersperg-Toeller;W. Wiedenmann;J. Wu;Sau Lan Wu;X. Wu;G. Zobernig;G. Dissertori
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/659317
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