From a sample of 152,000 τ decays collected by the ALEPH detector at LEP an upper limit of 24 MeV at 95% CL on the τ neutrino mass has been determined. The limit is obtained using a two dimensional likelihood fit of the visible energy and the invariant mass distribution of 25 τ → 5π(π0)ντ events.

An upper limit for the τ neutrino mass from τ → 5π(π0)ντ decays / D Buskulic;D Casper;I De Bonis;D Decamp;P Ghez;C Goy;J.-P Lees;M.-N Minard;P Odier;B Pietrzyk;F Ariztizabal;M Chmeissani;J.M Crespo;I Efthymiopoulos;E Fernandez;M Fernandez-Bosman;V Gaitan;Ll Garrido;M Martinez;S Orteu;A Pacheco;C Padilla;F Palla;A Pascual;J.A Perlas;F Sanchez;F Teubert;D Creanza;M de Palma;A Farilla;G Iaselli;G Maggi;N Marinelli;S Natali;S Nuzzo;A Ranieri;G Raso;F Romano;F Ruggieri;G Selvaggi;L Silvestris;P Tempesta;G Zito;X Huang;J Lin;Q Ouyang;T Wang;Y Xie;R Xu;S Xue;J Zhang;L Zhang;W Zhao;G Bonvicini;D Cassel;M Cattaneo;P Comas;P Coyle;H Drevermann;A Engelhardt;R.W Forty;M Frank;G Ganis;M Girone;R Hagelberg;J Harvey;R Jacobsen;P Janot;B Jost;J Knobloch;I Lehraus;M Maggi;C Markou;E.B Martin;P Mato;H Meinhard;A Minten;R Miquel;K Moffeit;P Palazzi;J.R Pater;P Perrodo;J.-F Pusztaszeri;F Ranjard;L Rolandi;D Schlatter;M Schmelling;W Tejessy;I.R Tomalin;R Veenhof;A Venturi;H Wachsmuth;W Wiedenmann;T Wildish;W Witzeling;J Wotschack;Z Ajaltouni;M Bardadin-Otwinowska;A Barres;C Boyer;A Falvard;P Gay;C Guicheney;P Henrard;J Jousset;B Michel;S Monteil;J-C Montret;D Pallin;P Perret;F Podlyski;J Proriol;J.-M Rossignol;F Saadi;T Fearnley;J.B Hansen;J.D Hansen;J.R Hansen;P.H Hansen;S.D Johnson;B.S Nilsson;A Kyriakis;E Simopoulou;I Siotis;A Vayaki;K Zachariadou;A Blondel;G Bonneaud;J.C Brient;P Bourdon;L Passalacqua;A Rougé;M Rumpf;R Tanaka;A Valassi;M Verderi;H Videau;D.J Candlin;M.I Parsons;E Veitch;E Focardi;G Parrini;M Corden;M Delfino;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;M Pepe-Altarelli;S Salomone;P Colrain;I ten Have;I.G Knowles;J.G Lynch;W Maitland;W.T Morton;C Raine;P Reeves;J.M Scarr;K Smith;M.G Smith;A.S Thompson;S Thorn;R.M Turnbull;U Becker;O Braun;C Geweniger;G Graefe;P Hanke;V Hepp;E.E Kluge;A Putzer;B Rensch;M Schmidt;J Sommer;H Stenzel;K Tittel;M Wunsch;R Beuselinck;D.M Binnie;W Cameron;D.J Colling;P.J Dornan;N Konstantinidis;L Moneta;A Moutoussi;J Nash;G San Martin;J.K Sedgbeer;A.M Stacey;G Dissertori;P Girtler;E Kneringer;D Kuhn;G Rudolph;C.K Bowdery;T.J Brodbeck;A.J Finch;F Foster;G Hughes;D Jackson;N.R Keemer;M Nuttall;A Patel;T Sloan;S.W Snow;E.P Whelan;A Galla;A.M Greene;K Kleinknecht;J Raab;B Renk;H.-G Sander;H Schmidt;S.M Walther;R Wanke;B Wolf;J.J Aubert;A.M Bencheikh;C Benchouk;A Bonissent;G Bujosa;D Calvet;J Carr;C Diaconu;F Etienne;M Thulasidas;D Nicod;P Payre;D Rousseau;M Talby;I Abt;R Assmann;C Bauer;W Blum;D Brown;H Dietl;F Dydak;C Gotzhein;A.W Halley;K Jakobs;H Kroha;G Lütjens;G Lutz;W Männer;H.-G Moser;R Richter;A Rosado-Schlosser;A.S Schwarz;R Settles;H Seywerd;U Stierlin;R.St Denis;G Wolf;R Alemany;J Boucrot;O Callot;A Cordier;F Courault;M Davier;L Duflot;J.-F Grivaz;Ph Heusse;M Jacquet;D.W Kim;F Le Diberder;J Lefrançois;A.-M Lutz;G Musolino;I Nikolic;H.J Park;I.C Park;M.-H Schune;S Simion;J.-J Veillet;I Videau;P Azzurri;D Abbaneo;G bagliesi;G Batignani;S Bettarini;U Bottigli;C Bozzi;G Calderini;M Carpinelli;M.A Ciocci;V Ciulli;R Dell'Orso;I Ferrante;F Fidecaro;L Foà;F Forti;A Giassi;M.A Giorgi;A Gregorio;F Ligabue;A Lusiani;P.S Marrocchesi;A Messineo;G Rizzo;G Sanguinetti;A Sciabà;P Spagnolo;J Steinberger;R Tenchini;G Tonelli;G Triggiani;C Vannini;P.G Verdini;J Walsh;A.P Betteridge;G.A Blair;L.M Bryant;Y Gao;M.G Green;D.L Johnson;T Medcalf;Ll.M Mir;J.A Strong;V Berlin;D.R Botterill;R.W Clifft;T.R Edgecock;S Haywood;M Edwards;P Maley;P.R Norton;J.C Thompson;B Bloch-Devaux;P Colas;H Duarte;S Emery;W Kozanecki;E Lançon;M.C Lemaire;E Locci;B Marx;P Perez;J Rander;J.-F Renardy;A Rosowsky;A Roussarie;J.-P Schuller;J Schwindling;D Si Mohand;A Trabelsi;B Vallage;R.P Johnson;A.M Litke;G Taylor;J Wear;A Beddall;C.N Booth;R Boswell;S Cartwright;F Combley;I Dawson;A Koksal;M Letho;W.M Newton;C Rankin;L.F Thompson;A Böhrer;S Brandt;G Cowan;E Feigl;C Grupen;G Lutters;J Minguet-Rodriguez;F Rivera;P Saraiva;U Schäfer;L Smolik;L Bosisio;R Della Marina;G Giannini;B Gobbo;L Pitis;F Ragusa;H Kim;J Rothberg;S Wasserbaech;S.R Armstrong;L Bellantoni;P Elmer;Z Feng;D.P.S Ferguson;Y.S Gao;S González;J Grahl;J.L Harton;O.J Hayes;H Hu;P.A McNamara;J.M Nachtman;W Orejudos;Y.B Pan;Y Saadi;M Schmitt;I.J Scott;V Sharma;J.D Turk;A.M Walsh;F.V Weber;Sau Lan Wu;X Wu;J.M Yamartino;M Zheng;G Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 349:(1995), pp. 585-596. [10.1016/0370-2693(95)00248-J]

An upper limit for the τ neutrino mass from τ → 5π(π0)ντ decays

FOCARDI, ETTORE;CIULLI, VITALIANO;
1995

Abstract

From a sample of 152,000 τ decays collected by the ALEPH detector at LEP an upper limit of 24 MeV at 95% CL on the τ neutrino mass has been determined. The limit is obtained using a two dimensional likelihood fit of the visible energy and the invariant mass distribution of 25 τ → 5π(π0)ντ events.
1995
349
585
596
D Buskulic;D Casper;I De Bonis;D Decamp;P Ghez;C Goy;J.-P Lees;M.-N Minard;P Odier;B Pietrzyk;F Ariztizabal;M Chmeissani;J.M Crespo;I Efthymiopoulos;E Fernandez;M Fernandez-Bosman;V Gaitan;Ll Garrido;M Martinez;S Orteu;A Pacheco;C Padilla;F Palla;A Pascual;J.A Perlas;F Sanchez;F Teubert;D Creanza;M de Palma;A Farilla;G Iaselli;G Maggi;N Marinelli;S Natali;S Nuzzo;A Ranieri;G Raso;F Romano;F Ruggieri;G Selvaggi;L Silvestris;P Tempesta;G Zito;X Huang;J Lin;Q Ouyang;T Wang;Y Xie;R Xu;S Xue;J Zhang;L Zhang;W Zhao;G Bonvicini;D Cassel;M Cattaneo;P Comas;P Coyle;H Drevermann;A Engelhardt;R.W Forty;M Frank;G Ganis;M Girone;R Hagelberg;J Harvey;R Jacobsen;P Janot;B Jost;J Knobloch;I Lehraus;M Maggi;C Markou;E.B Martin;P Mato;H Meinhard;A Minten;R Miquel;K Moffeit;P Palazzi;J.R Pater;P Perrodo;J.-F Pusztaszeri;F Ranjard;L Rolandi;D Schlatter;M Schmelling;W Tejessy;I.R Tomalin;R Veenhof;A Venturi;H Wachsmuth;W Wiedenmann;T Wildish;W Witzeling;J Wotschack;Z Ajaltouni;M Bardadin-Otwinowska;A Barres;C Boyer;A Falvard;P Gay;C Guicheney;P Henrard;J Jousset;B Michel;S Monteil;J-C Montret;D Pallin;P Perret;F Podlyski;J Proriol;J.-M Rossignol;F Saadi;T Fearnley;J.B Hansen;J.D Hansen;J.R Hansen;P.H Hansen;S.D Johnson;B.S Nilsson;A Kyriakis;E Simopoulou;I Siotis;A Vayaki;K Zachariadou;A Blondel;G Bonneaud;J.C Brient;P Bourdon;L Passalacqua;A Rougé;M Rumpf;R Tanaka;A Valassi;M Verderi;H Videau;D.J Candlin;M.I Parsons;E Veitch;E Focardi;G Parrini;M Corden;M Delfino;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;M Pepe-Altarelli;S Salomone;P Colrain;I ten Have;I.G Knowles;J.G Lynch;W Maitland;W.T Morton;C Raine;P Reeves;J.M Scarr;K Smith;M.G Smith;A.S Thompson;S Thorn;R.M Turnbull;U Becker;O Braun;C Geweniger;G Graefe;P Hanke;V Hepp;E.E Kluge;A Putzer;B Rensch;M Schmidt;J Sommer;H Stenzel;K Tittel;M Wunsch;R Beuselinck;D.M Binnie;W Cameron;D.J Colling;P.J Dornan;N Konstantinidis;L Moneta;A Moutoussi;J Nash;G San Martin;J.K Sedgbeer;A.M Stacey;G Dissertori;P Girtler;E Kneringer;D Kuhn;G Rudolph;C.K Bowdery;T.J Brodbeck;A.J Finch;F Foster;G Hughes;D Jackson;N.R Keemer;M Nuttall;A Patel;T Sloan;S.W Snow;E.P Whelan;A Galla;A.M Greene;K Kleinknecht;J Raab;B Renk;H.-G Sander;H Schmidt;S.M Walther;R Wanke;B Wolf;J.J Aubert;A.M Bencheikh;C Benchouk;A Bonissent;G Bujosa;D Calvet;J Carr;C Diaconu;F Etienne;M Thulasidas;D Nicod;P Payre;D Rousseau;M Talby;I Abt;R Assmann;C Bauer;W Blum;D Brown;H Dietl;F Dydak;C Gotzhein;A.W Halley;K Jakobs;H Kroha;G Lütjens;G Lutz;W Männer;H.-G Moser;R Richter;A Rosado-Schlosser;A.S Schwarz;R Settles;H Seywerd;U Stierlin;R.St Denis;G Wolf;R Alemany;J Boucrot;O Callot;A Cordier;F Courault;M Davier;L Duflot;J.-F Grivaz;Ph Heusse;M Jacquet;D.W Kim;F Le Diberder;J Lefrançois;A.-M Lutz;G Musolino;I Nikolic;H.J Park;I.C Park;M.-H Schune;S Simion;J.-J Veillet;I Videau;P Azzurri;D Abbaneo;G bagliesi;G Batignani;S Bettarini;U Bottigli;C Bozzi;G Calderini;M Carpinelli;M.A Ciocci;V Ciulli;R Dell'Orso;I Ferrante;F Fidecaro;L Foà;F Forti;A Giassi;M.A Giorgi;A Gregorio;F Ligabue;A Lusiani;P.S Marrocchesi;A Messineo;G Rizzo;G Sanguinetti;A Sciabà;P Spagnolo;J Steinberger;R Tenchini;G Tonelli;G Triggiani;C Vannini;P.G Verdini;J Walsh;A.P Betteridge;G.A Blair;L.M Bryant;Y Gao;M.G Green;D.L Johnson;T Medcalf;Ll.M Mir;J.A Strong;V Berlin;D.R Botterill;R.W Clifft;T.R Edgecock;S Haywood;M Edwards;P Maley;P.R Norton;J.C Thompson;B Bloch-Devaux;P Colas;H Duarte;S Emery;W Kozanecki;E Lançon;M.C Lemaire;E Locci;B Marx;P Perez;J Rander;J.-F Renardy;A Rosowsky;A Roussarie;J.-P Schuller;J Schwindling;D Si Mohand;A Trabelsi;B Vallage;R.P Johnson;A.M Litke;G Taylor;J Wear;A Beddall;C.N Booth;R Boswell;S Cartwright;F Combley;I Dawson;A Koksal;M Letho;W.M Newton;C Rankin;L.F Thompson;A Böhrer;S Brandt;G Cowan;E Feigl;C Grupen;G Lutters;J Minguet-Rodriguez;F Rivera;P Saraiva;U Schäfer;L Smolik;L Bosisio;R Della Marina;G Giannini;B Gobbo;L Pitis;F Ragusa;H Kim;J Rothberg;S Wasserbaech;S.R Armstrong;L Bellantoni;P Elmer;Z Feng;D.P.S Ferguson;Y.S Gao;S González;J Grahl;J.L Harton;O.J Hayes;H Hu;P.A McNamara;J.M Nachtman;W Orejudos;Y.B Pan;Y Saadi;M Schmitt;I.J Scott;V Sharma;J.D Turk;A.M Walsh;F.V Weber;Sau Lan Wu;X Wu;J.M Yamartino;M Zheng;G Zobernig
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