Single top production via the flavour changing neutral current reactions is searched for within the 214 pb−1 of data collected by ALEPH at centre-of-mass energies between 204 and 209 GeV. No deviation from the Standard Model expectation is observed and upper limits on the single top production cross sections are derived. The combination with data collected at lower centre-of-mass energies yields an upper limit on the branching ratio BR(t→Zc)+BR(t→Zu)<14%, for BR(t→γc)+BR(t→γu)=0 and mt=174 GeV/c2.

Search for single top production in e+e− collisions at √s up to 209 GeV / 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;G Boix;S Bravo;M.P Casado;M Chmeissani;J.M Crespo;E Fernandez;M Fernandez-Bosman;Ll Garrido;E Graugés;J Lopez;M Martinez;G Merino;A Pacheco;D Paneque;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;P Azzurri;T Barklow;O Buchmüller;M Cattaneo;F Cerutti;B Clerbaux;H Drevermann;R.W Forty;M Frank;F Gianotti;T.C Greening;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;J.J Ward;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;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;G Quast;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;G Wolf;J Boucrot;O Callot;M Davier;L Duflot;J.-F Grivaz;Ph Heusse;A Jacholkowska;L Serin;J.-J Veillet;J.-B de Vivie de Régie;C Yuan;G Bagliesi;T Boccali;L Foà;A Giammanco;A Giassi;F Ligabue;A Messineo;F Palla;G Sanguinetti;A Sciabà;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;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;U Sieler;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. - 543:(2002), pp. 173-182. [10.1016/S0370-2693(02)02307-9]

Search for single top production in e+e− collisions at √s up to 209 GeV

FOCARDI, ETTORE;CIULLI, VITALIANO;
2002

Abstract

Single top production via the flavour changing neutral current reactions is searched for within the 214 pb−1 of data collected by ALEPH at centre-of-mass energies between 204 and 209 GeV. No deviation from the Standard Model expectation is observed and upper limits on the single top production cross sections are derived. The combination with data collected at lower centre-of-mass energies yields an upper limit on the branching ratio BR(t→Zc)+BR(t→Zu)<14%, for BR(t→γc)+BR(t→γu)=0 and mt=174 GeV/c2.
2002
543
173
182
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;G Boix;S Bravo;M.P Casado;M Chmeissani;J.M Crespo;E Fernandez;M Fernandez-Bosman;Ll Garrido;E Graugés;J Lopez;M Martinez;G Merino;A Pacheco;D Paneque;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;P Azzurri;T Barklow;O Buchmüller;M Cattaneo;F Cerutti;B Clerbaux;H Drevermann;R.W Forty;M Frank;F Gianotti;T.C Greening;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;J.J Ward;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;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;G Quast;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;G Wolf;J Boucrot;O Callot;M Davier;L Duflot;J.-F Grivaz;Ph Heusse;A Jacholkowska;L Serin;J.-J Veillet;J.-B de Vivie de Régie;C Yuan;G Bagliesi;T Boccali;L Foà;A Giammanco;A Giassi;F Ligabue;A Messineo;F Palla;G Sanguinetti;A Sciabà;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;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;U Sieler;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 identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/658725
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