The flavour changing neutral current decay b→sγ has been detected in hadronic Z decays collected by ALEPH at LEP. The signal is isolated in lifetime-tagged events by the presence of a hard photon associated with a system of high momentum and high rapidity hadrons. The background processes are normalised from the data themselves. The inclusive branching ratio is measured to be consistent with the Standard Model expectation via penguin processes.

A measurement of the inclusive b→sγ branching ratio / R. Barate;D. Buskulic;D. Decamp;P. Ghez;C. Goy;J.-P. Lees;A. Lucotte;E. Merle;M.-N. Minard;J.-Y. Nief;B. Pietrzyk;R. Alemany;G. Boix;M.P. Casado;M. Chmeissani;J.M. Crespo;M. Delfino;E. Fernandez;M. Fernandez-Bosman;Ll. Garrido;E. Graugès;A. Juste;M. Martinez;G. Merino;R. Miquel;Ll.M. Mir;I.C. Park;A. Pascual;J.A. Perlas;I. Riu;F. Sanchez;A. Colaleo;D. Creanza;M. de Palma;G. Gelao;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;U. Becker;P. Bright-Thomas;D. Casper;M. Cattaneo;V. Ciulli;G. Dissertori;H. Drevermann;R.W. Forty;M. Frank;R. Hagelberg;J.B. Hansen;J. Harvey;P. Janot;B. Jost;I. Lehraus;P. Mato;A. Minten;L. Moneta;A. Pacheco;J.-F. Pusztaszeri;F. Ranjard;L. Rolandi;D. Rousseau;D. Schlatter;M. Schmitt;O. Schneider;W. Tejessy;F. Teubert;I.R. Tomalin;H. Wachsmuth;Z. Ajaltouni;F. Badaud;G. Chazelle;O. Deschamps;A. Falvard;C. Ferdi;P. Gay;C. Guicheney;P. Henrard;J. Jousset;B. Michel;S. Monteil;J-C. Montret;D. Pallin;P. Perret;F. Podlyski;J. Proriol;P. Rosnet;J.D. Hansen;J.R. Hansen;P.H. Hansen;B.S. Nilsson;B. Rensch;A. Wäänänen;G. Daskalakis;A. Kyriakis;C. Markou;E. Simopoulou;I. Siotis;A. Vayaki;A. Blondel;G. Bonneaud;J.-C. Brient;P. Bourdon;A. Rougé;M. Rumpf;A. Valassi;M. Verderi;H. Videau;E. Focardi;G. Parrini;K. Zachariadou;M. Corden;C. Georgiopoulos;D.E. Jaffe;A. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;F. Cerutti;V. Chiarella;G. Felici;P. Laurelli;G. Mannocchi;F. Murtas;G.P. Murtas;L. Passalacqua;M. Pepe-Altarelli;L. Curtis;A.W. Halley;J.G. Lynch;P. Negus;V. O'Shea;C. Raine;J.M. Scarr;K. Smith;P. Teixeira-Dias;A.S. Thompson;E. Thomson;O. Buchmüller;S. Dhamotharan;C. Geweniger;G. Graefe;P. Hanke;G. Hansper;V. Hepp;E.E. Kluge;A. Putzer;J. Sommer;K. Tittel;S. Werner;M. Wunsch;R. Beuselinck;D.M. Binnie;W. Cameron;P.J. Dornan;M. Girone;S. Goodsir;E.B. Martin;N. Marinelli;A. Moutoussi;J. Nash;J.K. Sedgbeer;P. Spagnolo;M.D. Williams;V.M. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;A.P. Betteridge;C.K. Bowdery;P.G. Buck;P. Colrain;G. Crawford;A.J. Finch;F. Foster;G. Hughes;R.W.L. Jones;N.A. Robertson;T. Sloan;M.I. Williams;I. Giehl;A.M. Greene;C. Hoffmann;K. Jakobs;K. Kleinknecht;G. Quast;B. Renk;E. Rohne;H.-G. Sander;P. van Gemmeren;C. Zeitnitz;J.J. Aubert;C. Benchouk;A. Bonissent;G. Bujosa;J. Carr;P. Coyle;F. Etienne;O. Leroy;F. Motsch;P. Payre;M. Talby;A. Sadouki;M. Thulasidas;K. Trabelsi;M. Aleppo;M. Antonelli;F. Ragusa;R. Berlich;W. Blum;V. Büscher;H. Dietl;G. Ganis;H. Kroha;G. Lütjens;C. Mannert;W. Männer;H.-G. Moser;S. Schael;R. Settles;H. Seywerd;H. Stenzel;W. Wiedenmann;G. Wolf;J. Boucrot;O. Callot;S. Chen;A. Cordier;M. Davier;L. Duflot;J.-F. Grivaz;Ph. Heusse;A. Höcker;A. Jacholkowska;D.W. Kim;F. Le Diberder;J. Lefrançois;A.-M. Lutz;M.-H. Schune;E. Tournefier;J.-J. Veillet;I. Videau;D. Zerwas;P. Azzurri;G. Bagliesi;G. Batignani;S. Bettarini;T. Boccali;C. Bozzi;G. Calderini;M. Carpinelli;M.A. Ciocci;R. Dell'Orso;R. Fantechi;I. Ferrante;L. Foà;F. Forti;A. Giassi;M.A. Giorgi;A. Gregorio;F. Ligabue;A. Lusiani;P.S. Marrocchesi;A. Messineo;F. Palla;G. Rizzo;G. Sanguinetti;A. Sciabà;G. Sguazzoni;R. Tenchini;G. Tonelli;C. Vannini;A. Venturi;P.G. Verdini;G.A. Blair;L.M. Bryant;J.T. Chambers;M.G. Green;T. Medcalf;P. Perrodo;J.A. Strong;J.H. von Wimmersperg-Toeller;D.R. Botterill;R.W. Clifft;T.R. Edgecock;S. Haywood;P.R. Norton;J.C. Thompson;A.E. Wright;B. Bloch-Devaux;P. Colas;S. Emery;W. Kozanecki;E. Lançon;M.-C. Lemaire;E. Locci;P. Perez;J. Rander;J.-F. Renardy;A. Roussarie;J.-P. Schuller;J. Schwindling;A. Trabelsi;B. Vallage;S.N. Black;J.H. Dann;R.P. Johnson;H.Y. Kim;N. Konstantinidis;A.M. Litke;M.A. McNeil;G. Taylor;C.N. Booth;C.A.J. Brew;S. Cartwright;F. Combley;M.S. Kelly;M. Lehto;J. Reeve;L.F. Thompson;K. Affholderbach;A. Böhrer;S. Brandt;G. Cowan;C. Grupen;P. Saraiva;L. Smolik;F. Stephan;G. Giannini;B. Gobbo;G. Musolino;J. Rothberg;S. Wasserbaech;S.R. Armstrong;E. Charles;P. Elmer;D.P.S. Ferguson;Y. Gao;S. González;T.C. Greening;O.J. Hayes;H. Hu;S. Jin;P.A. McNamara III;J.M. Nachtman;J. Nielsen;W. Orejudos;Y.B. Pan;Y. Saadi;I.J. Scott;J. Walsh;Sau Lan Wu;X. Wu;G. Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 429:(1998), pp. 169-187. [10.1016/S0370-2693(98)00404-3]

A measurement of the inclusive b→sγ branching ratio

FOCARDI, ETTORE;CIULLI, VITALIANO;
1998

Abstract

The flavour changing neutral current decay b→sγ has been detected in hadronic Z decays collected by ALEPH at LEP. The signal is isolated in lifetime-tagged events by the presence of a hard photon associated with a system of high momentum and high rapidity hadrons. The background processes are normalised from the data themselves. The inclusive branching ratio is measured to be consistent with the Standard Model expectation via penguin processes.
429
169
187
R. Barate;D. Buskulic;D. Decamp;P. Ghez;C. Goy;J.-P. Lees;A. Lucotte;E. Merle;M.-N. Minard;J.-Y. Nief;B. Pietrzyk;R. Alemany;G. Boix;M.P. Casado;M. Chmeissani;J.M. Crespo;M. Delfino;E. Fernandez;M. Fernandez-Bosman;Ll. Garrido;E. Graugès;A. Juste;M. Martinez;G. Merino;R. Miquel;Ll.M. Mir;I.C. Park;A. Pascual;J.A. Perlas;I. Riu;F. Sanchez;A. Colaleo;D. Creanza;M. de Palma;G. Gelao;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;U. Becker;P. Bright-Thomas;D. Casper;M. Cattaneo;V. Ciulli;G. Dissertori;H. Drevermann;R.W. Forty;M. Frank;R. Hagelberg;J.B. Hansen;J. Harvey;P. Janot;B. Jost;I. Lehraus;P. Mato;A. Minten;L. Moneta;A. Pacheco;J.-F. Pusztaszeri;F. Ranjard;L. Rolandi;D. Rousseau;D. Schlatter;M. Schmitt;O. Schneider;W. Tejessy;F. Teubert;I.R. Tomalin;H. Wachsmuth;Z. Ajaltouni;F. Badaud;G. Chazelle;O. Deschamps;A. Falvard;C. Ferdi;P. Gay;C. Guicheney;P. Henrard;J. Jousset;B. Michel;S. Monteil;J-C. Montret;D. Pallin;P. Perret;F. Podlyski;J. Proriol;P. Rosnet;J.D. Hansen;J.R. Hansen;P.H. Hansen;B.S. Nilsson;B. Rensch;A. Wäänänen;G. Daskalakis;A. Kyriakis;C. Markou;E. Simopoulou;I. Siotis;A. Vayaki;A. Blondel;G. Bonneaud;J.-C. Brient;P. Bourdon;A. Rougé;M. Rumpf;A. Valassi;M. Verderi;H. Videau;E. Focardi;G. Parrini;K. Zachariadou;M. Corden;C. Georgiopoulos;D.E. Jaffe;A. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;F. Cerutti;V. Chiarella;G. Felici;P. Laurelli;G. Mannocchi;F. Murtas;G.P. Murtas;L. Passalacqua;M. Pepe-Altarelli;L. Curtis;A.W. Halley;J.G. Lynch;P. Negus;V. O'Shea;C. Raine;J.M. Scarr;K. Smith;P. Teixeira-Dias;A.S. Thompson;E. Thomson;O. Buchmüller;S. Dhamotharan;C. Geweniger;G. Graefe;P. Hanke;G. Hansper;V. Hepp;E.E. Kluge;A. Putzer;J. Sommer;K. Tittel;S. Werner;M. Wunsch;R. Beuselinck;D.M. Binnie;W. Cameron;P.J. Dornan;M. Girone;S. Goodsir;E.B. Martin;N. Marinelli;A. Moutoussi;J. Nash;J.K. Sedgbeer;P. Spagnolo;M.D. Williams;V.M. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;A.P. Betteridge;C.K. Bowdery;P.G. Buck;P. Colrain;G. Crawford;A.J. Finch;F. Foster;G. Hughes;R.W.L. Jones;N.A. Robertson;T. Sloan;M.I. Williams;I. Giehl;A.M. Greene;C. Hoffmann;K. Jakobs;K. Kleinknecht;G. Quast;B. Renk;E. Rohne;H.-G. Sander;P. van Gemmeren;C. Zeitnitz;J.J. Aubert;C. Benchouk;A. Bonissent;G. Bujosa;J. Carr;P. Coyle;F. Etienne;O. Leroy;F. Motsch;P. Payre;M. Talby;A. Sadouki;M. Thulasidas;K. Trabelsi;M. Aleppo;M. Antonelli;F. Ragusa;R. Berlich;W. Blum;V. Büscher;H. Dietl;G. Ganis;H. Kroha;G. Lütjens;C. Mannert;W. Männer;H.-G. Moser;S. Schael;R. Settles;H. Seywerd;H. Stenzel;W. Wiedenmann;G. Wolf;J. Boucrot;O. Callot;S. Chen;A. Cordier;M. Davier;L. Duflot;J.-F. Grivaz;Ph. Heusse;A. Höcker;A. Jacholkowska;D.W. Kim;F. Le Diberder;J. Lefrançois;A.-M. Lutz;M.-H. Schune;E. Tournefier;J.-J. Veillet;I. Videau;D. Zerwas;P. Azzurri;G. Bagliesi;G. Batignani;S. Bettarini;T. Boccali;C. Bozzi;G. Calderini;M. Carpinelli;M.A. Ciocci;R. Dell'Orso;R. Fantechi;I. Ferrante;L. Foà;F. Forti;A. Giassi;M.A. Giorgi;A. Gregorio;F. Ligabue;A. Lusiani;P.S. Marrocchesi;A. Messineo;F. Palla;G. Rizzo;G. Sanguinetti;A. Sciabà;G. Sguazzoni;R. Tenchini;G. Tonelli;C. Vannini;A. Venturi;P.G. Verdini;G.A. Blair;L.M. Bryant;J.T. Chambers;M.G. Green;T. Medcalf;P. Perrodo;J.A. Strong;J.H. von Wimmersperg-Toeller;D.R. Botterill;R.W. Clifft;T.R. Edgecock;S. Haywood;P.R. Norton;J.C. Thompson;A.E. Wright;B. Bloch-Devaux;P. Colas;S. Emery;W. Kozanecki;E. Lançon;M.-C. Lemaire;E. Locci;P. Perez;J. Rander;J.-F. Renardy;A. Roussarie;J.-P. Schuller;J. Schwindling;A. Trabelsi;B. Vallage;S.N. Black;J.H. Dann;R.P. Johnson;H.Y. Kim;N. Konstantinidis;A.M. Litke;M.A. McNeil;G. Taylor;C.N. Booth;C.A.J. Brew;S. Cartwright;F. Combley;M.S. Kelly;M. Lehto;J. Reeve;L.F. Thompson;K. Affholderbach;A. Böhrer;S. Brandt;G. Cowan;C. Grupen;P. Saraiva;L. Smolik;F. Stephan;G. Giannini;B. Gobbo;G. Musolino;J. Rothberg;S. Wasserbaech;S.R. Armstrong;E. Charles;P. Elmer;D.P.S. Ferguson;Y. Gao;S. González;T.C. Greening;O.J. Hayes;H. Hu;S. Jin;P.A. McNamara III;J.M. Nachtman;J. Nielsen;W. Orejudos;Y.B. Pan;Y. Saadi;I.J. Scott;J. Walsh;Sau Lan Wu;X. Wu;G. Zobernig
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/638895
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