Measurement of the Z resonance parameters at LEP

Barate, R.; Decamp, D.; Ghez, P.; Goy, C.; Lees, J.; Lucotte, A.; Merle, E.; Minard, M.; Pietrzyk, B.; Alemany, R.; Casado, M.; Chmeissani, M.; Comas, P.; Crespo, J.; Fernandez, E.; Fernandez Bosman, M.; Garrido, L.; Grauges, E.; Juste, A.; Martinez, M.; Merino, G.; Miquel, R.; Mir, L.; Orteu, S.; Pacheco, A.; Park, I.; Perlas, J.; Riu, I.; Sanchez, F.; Colaleo, A.; Creanza, D.; de Palma, M.; Iaselli, G.; Maggi, G.; Maggi, M.; Nuzzo, S.; Ranieri, A.; Raso, G.; Ruggieri, F.; Selvaggi, G.; Silvestris, L.; Tempesta, P.; Tricomi, A.; Zito, G.; Huang, X.; Lin, J.; Ouyang, Q.; Wang, T.; Xie, Y.; Xu, R.; Xue, S.; Zhang, J.; Zhang, L.; Zhao, W.; Abbaneo, D.; Bazarko, A.; Becker, U.; Boix, G.; Bird, F.; Blucher, E.; Bonvicini, G.; Bright Thomas, P.; Cattaneo, M.; Cerutti, F.; Ciulli, V.; Dissertori, G.; Drevermann, H.; Forty, R.; Frank, M.; Greening, T.; Hagelberg, R.; Halley, A.; Hansen, J.; Harvey, J.; Jacobsen, R.; Janot, P.; Jost, B.; Knobloch, J.; Lazeyras, P.; Lehraus, I.; Maley, P.; Mato, P.; May, J.; Moutoussi, A.; Ranjard, F.; Rolandi, L.; Schlatter, D.; Schmitt, M.; Schneider, O.; Spagnolo, P.; Tejessy, W.; Teubert, F.; Tomalin, I.; Tournefier, E.; Veenhof, R.; Wiedenmann, W.; Wright, A.; Ajaltouni, Z.; Badaud, F.; Chazelle, G.; Deschamps, O.; Falvard, A.; Ferdi, C.; Gay, P.; Guicheney, C.; Henrard, P.; Jousset, J.; Michel, B.; Monteil, S.; Montret, J.; Pallin, D.; Perret, P.; Podlyski, F.; Bertelsen, H.; Fernley, T.; Hansen, F.; Hansen, J.; Hansen, J.; Hansen, P.; Lindahl, A.; Mollerud, R.; Nilsson, B.; Rensch, B.; Waananen, A.; Daskalakis, G.; Kyriakis, A.; Markou, C.; Simopoulou, E.; Siotis, I.; Vayaki, A.; Blondel, A.; Bonneaud, G.; Brient, J.; Rouge, A.; Rumpf, M.; Swynghedauw, M.; Tanaka, R.; Verderi, M.; Videau, H.; Focardi, E.; Parrini, G.; Zachariadou, K.; Cavanaugh, R.; Corden, M.; Georgiopoulos, C.; Antonelli, A.; Bencivenni, G.; Bologna, G.; Bossi, F.; Campana, P.; Capon, G.; Chiarella, V.; Felici, G.; Laurelli, P.; Mannocchi, G.; Murtas, F.; Murtas, G.; Passalacqua, L.; Pepe Altarelli, M.; Picchi, P.; Colrain, P.; ten Have, I.; Hughes, I.; Knowles, I.; Lynch, J.; Morton, W.; Raine, C.; Reeves, P.; O'Shea, V.; Scarr, J.; Smith, K.; Thompson, A.; Turnbull, R.; Buchmuller, O.; Dhamotharan, S.; Geweniger, C.; Hanke, P.; Hansper, G.; Hepp, V.; Kluge, E.; Putzer, A.; Sommer, J.; Tittel, K.; Werner, S.; Wunsch, M.; Beuselinck, R.; Binnie, D.; Cameron, W.; Dornan, P.; Girone, M.; Goodsir, S.; Martin, E.; Marinelli, N.; Nash, J.; Sciaba, A.; Sedgbeer, J.; Thomson, E.; Williams, M.; Ghete, V.; Girtler, P.; Kneringer, E.; Kuhn, D.; Rudolph, G.; Bowdery, C.; Buck, P.; Finch, A.; Foster, F.; Hughes, G.; Jones, R.; Keemer, N.; Robertson, N.; Sloan, T.; Snow, S.; Williams, M.; Bauerdick, L.; van Gemmeren, P.; Giehl, I.; Jakobs, K.; Kasemann, M.; Kleinknecht, K.; Quast, G.; Renk, B.; Rohne, E.; Sander, H.; Schmelling, M.; Wachsmuth, H.; Wanke, R.; Zeitnitz, C.; Aubert, J.; Benchouk, C.; Bonissent, A.; Carr, J.; Coyle, P.; Etienne, F.; Motsch, F.; Payre, P.; Rousseau, D.; Talby, M.; Thulasidas, M.; Aleppo, M.R.A.; Antonelli, M.; Ragusa, F.; Buscher, V.; Dietl, H.; Ganis, G.; Huttmann, K.; Lutjens, G.; Mannert, C.; Manner, W.; Moser, H.; Schael, S.; Settles, R.; Seywerd, H.; Stenzel, H.; Wiedenmann, W.; Wolf, G.; Azzurri, P.; Boucrot, J.; Callot, O.; Chen, S.; Cordier, A.; Davier, M.; Duflot, L.; Grivaz, J.; Heusse, P.; Jacholkowska, A.; Le Diberder, F.; Lefrancois, J.; Lutz, A.; Schune, M.; Veillet, J.; Videau, I.; Zerwas, D.; Bagliesi, G.; Bettarini, S.; Boccali, T.; Bozzi, C.; Calderini, G.; Dell'Orso, R.; Fantechi, R.; Ferrante, I.; Fidecaro, F.; Foa, L.; Giassi, A.; Gregorio, A.; Ligabue, F.; Lusiani, A.; Marrocchesi, P.; Messineo, A.; Palla, F.; Rizzo, G.; Sanguinetti, G.; Sguazzoni, G.; Steinberger, J.; Tenchini, R.; Vannini, C.; Venturi, A.; Verdini, P.; Blair, G.; Cowan, G.; Green, M.; Medcalf, T.; Strong, J.; von Wimmersperg Toeller, J.; Botterill, D.; Clifft, R.; Edgecock, T.; Edwards, M.; Haywood, S.; Norton, P.; Thompson, J.; Bloch Devaux, B.; Colas, P.; Emery, S.; Kozanecki, W.; Lancon, E.; Lemaire, M.; Locci, E.; Perez, P.; Rander, J.; Renardy, J.; Roussarie, A.; Schuller, J.; Schwindling, J.; Vallage, B.; Black, S.; Dann, J.; Kim, H.; Konstantinidis, N.; Litke, A.; Mcneil, M.; Taylor, G.; Booth, C.; Cartwright, S.; Combley, F.; Lehto, M.; Thompson, L.; Affholderbach, K.; Barberio, E.; Bohrer, A.; Brandt, S.; Burkhardt, H.; Feigl, E.; Grupen, C.; Hess, J.; Lutters, G.; Meinhard, H.; Minguet Rodriguez, J.; Mirabito, L.; Misiejuk, A.; Neugebauer, E.; Prange, G.; Rivera, F.; Saraiva, P.; Schafer, U.; Seywerd, H.; Sieler, U.; Smolik, L.; Stephan, F.; Trier, H.; Appollonio, M.; Bosisio, L.; Della Marina, R.; Giannini, G.; Gobbo, B.; Musolino, G.; Pitis, L.; Kim, H.; Rothberg, J.; Wasserbaech, S.; Armstrong, S.; Bellantoni, L.; Cinabro, D.; Conway, J.; Elmer, P.; Feng, Z.; Ferguson, D.; Gao, Y.; Gonzalez, S.; Grahl, J.; Harton, J.; Hayes, O.; Hu, H.; Jin, S.; Johnson, R.; Kile, J.; Mcnamara, P.; Nielsen, J.; Orejudos, W.; Pan, Y.; Saadi, Y.; Scott, I.; Sharma, V.; Walsh, A.; Walsh, J.; Wear, J.; Wu, S.; Wu, X.; Yamartino, J.; Zobernig, G.

doi:10.1007/s100520050732

The properties of the Z resonance are measured from the analysis of 4.5 million Z decays into fermion pairs collected with the ALEPII detector at LEP. The data are consistent with lepton universality. The resonance parameters are measured to be M(Z) = (91.1885 +/- 0.0031) GeV/c(2), Gamma(Z) = (2.4941 +/- 0.0043) GeV, sigma(had)(0) = (41.559 +/- 0.058) nb and, combining the three lepton flavours, R(l) = 20.725 +/- 0.039. The corresponding number of light neutrino species is N(v) = 2.983 +/- 0.013 and the strong coupling constant is alpha(s)(M(Z)) = 0.114 +/- 0.004 +/- 0.002(QCD) + 0.005 log(10) [M(H)/150 GeV/c(2)]. The lepton pair forward-backward asymmetry is measured to be A(FB)(0,l) = 0.0173 +/- 0.0016 from which the effective weak mixing angle is described: sin(2) theta(eff)(lept) = 0.23089 +/- 0.00089. The measurement of the leptonic width Gamma(ll) = 84.02 +/- 0.15 MeV leads to a determination of the effective rho parameter rho(eff)(lept) = 1.0064 +/- 0.0018. The data support the Standard Model and favour a light Higgs.

Measurement of the Z resonance parameters at LEP / R. Barate, D. Decamp, P. Ghez, C. Goy, J. Lees, A. Lucotte, E. Merle, M. Minard, B. Pietrzyk, R. Alemany, M. Casado, M. Chmeissani, P. Comas, J. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. Grauges, A. Juste, M. Martinez, G. Merino, R. Miquel, L. Mir, S. Orteu, A. Pacheco, I. Park, J. Perlas, I. Riu, F. Sanchez, A. Colaleo, D. Creanza, 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, A. Bazarko, U. Becker, G. Boix, F. Bird, E. Blucher, G. Bonvicini, P. Bright-Thomas, M. Cattaneo, F. Cerutti, V. Ciulli, G. Dissertori, H. Drevermann, R. Forty, M. Frank, T. Greening, R. Hagelberg, A. Halley, J. Hansen, J. Harvey, R. Jacobsen, P. Janot, B. Jost, J. Knobloch, P. Lazeyras, I. Lehraus, P. Maley, P. Mato, J. May, A. Moutoussi, F. Ranjard, L. Rolandi, D. Schlatter, M. Schmitt, O. Schneider, P. Spagnolo, W. Tejessy, F. Teubert, I. Tomalin, E. Tournefier, R. Veenhof, W. Wiedenmann, A. Wright, 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. Montret, D. Pallin, P. Perret, F. Podlyski, H. Bertelsen, T. Fernley, F. Hansen, J. Hansen, J. Hansen, P. Hansen, A. Lindahl, R. Mollerud, B. Nilsson, B. Rensch, A. Waananen, G. Daskalakis, A. Kyriakis, C. Markou, E. Simopoulou, I. Siotis, A. Vayaki, A. Blondel, G. Bonneaud, J. Brient, A. Rouge, M. Rumpf, M. Swynghedauw, R. Tanaka, M. Verderi, H. Videau, E. Focardi, G. Parrini, K. Zachariadou, R. Cavanaugh, M. Corden, C. Georgiopoulos, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, V. Chiarella, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G. Murtas, L. Passalacqua, M. Pepe-Altarelli, P. Picchi, P. Colrain, I. ten Have, I. Hughes, I. Knowles, J. Lynch, W. Morton, C. Raine, P. Reeves, V. O'Shea, J. Scarr, K. Smith, A. Thompson, R. Turnbull, O. Buchmuller, S. Dhamotharan, C. Geweniger, P. Hanke, G. Hansper, V. Hepp, E. Kluge, A. Putzer, J. Sommer, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D. Binnie, W. Cameron, P. Dornan, M. Girone, S. Goodsir, E. Martin, N. Marinelli, J. Nash, A. Sciaba, J. Sedgbeer, E. Thomson, M. Williams, V. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, C. Bowdery, P. Buck, A. Finch, F. Foster, G. Hughes, R. Jones, N. Keemer, N. Robertson, T. Sloan, S. Snow, M. Williams, L. Bauerdick, P. van Gemmeren, I. Giehl, K. Jakobs, M. Kasemann, K. Kleinknecht, G. Quast, B. Renk, E. Rohne, H. Sander, M. Schmelling, H. Wachsmuth, R. Wanke, C. Zeitnitz, J. Aubert, C. Benchouk, A. Bonissent, J. Carr, P. Coyle, F. Etienne, F. Motsch, P. Payre, D. Rousseau, M. Talby, M. Thulasidas, M.R.A. Aleppo, M. Antonelli, F. Ragusa, V. Buscher, H. Dietl, G. Ganis, K. Huttmann, G. Lutjens, C. Mannert, W. Manner, H. Moser, S. Schael, R. Settles, H. Seywerd, H. Stenzel, W. Wiedenmann, G. Wolf, P. Azzurri, J. Boucrot, O. Callot, S. Chen, A. Cordier, M. Davier, L. Duflot, J. Grivaz, P. Heusse, A. Jacholkowska, F. Le Diberder, J. Lefrancois, A. Lutz, M. Schune, J. Veillet, I. Videau, D. Zerwas, G. Bagliesi, S. Bettarini, T. Boccali, C. Bozzi, G. Calderini, R. Dell'Orso, R. Fantechi, I. Ferrante, F. Fidecaro, L. Foa, A. Giassi, A. Gregorio, F. Ligabue, A. Lusiani, P. Marrocchesi, A. Messineo, F. Palla, G. Rizzo, G. Sanguinetti, G. Sguazzoni, J. Steinberger, R. Tenchini, C. Vannini, A. Venturi, P. Verdini, G. Blair, G. Cowan, M. Green, T. Medcalf, J. Strong, J. von Wimmersperg-Toeller, D. Botterill, R. Clifft, T. Edgecock, M. Edwards, S. Haywood, P. Norton, J. Thompson, B. Bloch-Devaux, P. Colas, S. Emery, W. Kozanecki, E. Lancon, M. Lemaire, E. Locci, P. Perez, J. Rander, J. Renardy, A. Roussarie, J. Schuller, J. Schwindling, B. Vallage, S. Black, J. Dann, H. Kim, N. Konstantinidis, A. Litke, M. McNeil, G. Taylor, C. Booth, S. Cartwright, F. Combley, M. Lehto, L. Thompson, K. Affholderbach, E. Barberio, A. Bohrer, S. Brandt, H. Burkhardt, E. Feigl, C. Grupen, J. Hess, G. Lutters, H. Meinhard, J. Minguet-Rodriguez, L. Mirabito, A. Misiejuk, E. Neugebauer, G. Prange, F. Rivera, P. Saraiva, U. Schafer, H. Seywerd, U. Sieler, L. Smolik, F. Stephan, H. Trier, M. Appollonio, L. Bosisio, R. Della Marina, G. Giannini, B. Gobbo, G. Musolino, L. Pitis, H. Kim, J. Rothberg, S. Wasserbaech, S. Armstrong, L. Bellantoni, D. Cinabro, J. Conway, P. Elmer, Z. Feng, D. Ferguson, Y. Gao, S. Gonzalez, J. Grahl, J. Harton, O. Hayes, H. Hu, S. Jin, R. Johnson, J. Kile, P. McNamara, J. Nielsen, W. Orejudos, Y. Pan, Y. Saadi, I. Scott, V. Sharma, A. Walsh, J. Walsh, J. Wear, S. Wu, X. Wu, J. Yamartino, G. Zobernig. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 14:1(2000), pp. 1-50. [10.1007/s100520050732]

Measurement of the Z resonance parameters at LEP

R. Barate;D. Decamp;P. Ghez;C. Goy;J. Lees;A. Lucotte;E. Merle;M. Minard;B. Pietrzyk;R. Alemany;M. Casado;M. Chmeissani;P. Comas;J. Crespo;E. Fernandez;M. Fernandez Bosman;L. Garrido;E. Grauges;A. Juste;M. Martinez;G. Merino;R. Miquel;L. Mir;S. Orteu;A. Pacheco;I. Park;J. Perlas;I. Riu;F. Sanchez;A. Colaleo;D. Creanza;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;A. Bazarko;U. Becker;G. Boix;F. Bird;E. Blucher;G. Bonvicini;P. Bright Thomas;M. Cattaneo;F. Cerutti;V. Ciulli;G. Dissertori;H. Drevermann;R. Forty;M. Frank;T. Greening;R. Hagelberg;A. Halley;J. Hansen;J. Harvey;R. Jacobsen;P. Janot;B. Jost;J. Knobloch;P. Lazeyras;I. Lehraus;P. Maley;P. Mato;J. May;A. Moutoussi;F. Ranjard;L. Rolandi;D. Schlatter;M. Schmitt;O. Schneider;P. Spagnolo;W. Tejessy;F. Teubert;I. Tomalin;E. Tournefier;R. Veenhof;W. Wiedenmann;A. Wright;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. Montret;D. Pallin;P. Perret;F. Podlyski;H. Bertelsen;T. Fernley;F. Hansen;J. Hansen;J. Hansen;P. Hansen;A. Lindahl;R. Mollerud;B. Nilsson;B. Rensch;A. Waananen;G. Daskalakis;A. Kyriakis;C. Markou;E. Simopoulou;I. Siotis;A. Vayaki;A. Blondel;G. Bonneaud;J. Brient;A. Rouge;M. Rumpf;M. Swynghedauw;R. Tanaka;M. Verderi;H. Videau;E. Focardi;G. Parrini;K. Zachariadou;R. Cavanaugh;M. Corden;C. Georgiopoulos;A. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;V. Chiarella;G. Felici;P. Laurelli;G. Mannocchi;F. Murtas;G. Murtas;L. Passalacqua;M. Pepe Altarelli;P. Picchi;P. Colrain;I. ten Have;I. Hughes;I. Knowles;J. Lynch;W. Morton;C. Raine;P. Reeves;V. O'Shea;J. Scarr;K. Smith;A. Thompson;R. Turnbull;O. Buchmuller;S. Dhamotharan;C. Geweniger;P. Hanke;G. Hansper;V. Hepp;E. Kluge;A. Putzer;J. Sommer;K. Tittel;S. Werner;M. Wunsch;R. Beuselinck;D. Binnie;W. Cameron;P. Dornan;M. Girone;S. Goodsir;E. Martin;N. Marinelli;J. Nash;A. Sciaba;J. Sedgbeer;E. Thomson;M. Williams;V. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;C. Bowdery;P. Buck;A. Finch;F. Foster;G. Hughes;R. Jones;N. Keemer;N. Robertson;T. Sloan;S. Snow;M. Williams;L. Bauerdick;P. van Gemmeren;I. Giehl;K. Jakobs;M. Kasemann;K. Kleinknecht;G. Quast;B. Renk;E. Rohne;H. Sander;M. Schmelling;H. Wachsmuth;R. Wanke;C. Zeitnitz;J. Aubert;C. Benchouk;A. Bonissent;J. Carr;P. Coyle;F. Etienne;F. Motsch;P. Payre;D. Rousseau;M. Talby;M. Thulasidas;M.R.A. Aleppo;M. Antonelli;F. Ragusa;V. Buscher;H. Dietl;G. Ganis;K. Huttmann;G. Lutjens;C. Mannert;W. Manner;H. Moser;S. Schael;R. Settles;H. Seywerd;H. Stenzel;W. Wiedenmann;G. Wolf;P. Azzurri;J. Boucrot;O. Callot;S. Chen;A. Cordier;M. Davier;L. Duflot;J. Grivaz;P. Heusse;A. Jacholkowska;F. Le Diberder;J. Lefrancois;A. Lutz;M. Schune;J. Veillet;I. Videau;D. Zerwas;G. Bagliesi;S. Bettarini;T. Boccali;C. Bozzi;G. Calderini;R. Dell'Orso;R. Fantechi;I. Ferrante;F. Fidecaro;L. Foa;A. Giassi;A. Gregorio;F. Ligabue;A. Lusiani;P. Marrocchesi;A. Messineo;F. Palla;G. Rizzo;G. Sanguinetti;G. Sguazzoni;J. Steinberger;R. Tenchini;C. Vannini;A. Venturi;P. Verdini;G. Blair;G. Cowan;M. Green;T. Medcalf;J. Strong;J. von Wimmersperg Toeller;D. Botterill;R. Clifft;T. Edgecock;M. Edwards;S. Haywood;P. Norton;J. Thompson;B. Bloch Devaux;P. Colas;S. Emery;W. Kozanecki;E. Lancon;M. Lemaire;E. Locci;P. Perez;J. Rander;J. Renardy;A. Roussarie;J. Schuller;J. Schwindling;B. Vallage;S. Black;J. Dann;H. Kim;N. Konstantinidis;A. Litke;M. McNeil;G. Taylor;C. Booth;S. Cartwright;F. Combley;M. Lehto;L. Thompson;K. Affholderbach;E. Barberio;A. Bohrer;S. Brandt;H. Burkhardt;E. Feigl;C. Grupen;J. Hess;G. Lutters;H. Meinhard;J. Minguet Rodriguez;L. Mirabito;A. Misiejuk;E. Neugebauer;G. Prange;F. Rivera;P. Saraiva;U. Schafer;H. Seywerd;U. Sieler;L. Smolik;F. Stephan;H. Trier;M. Appollonio;L. Bosisio;R. Della Marina;G. Giannini;B. Gobbo;G. Musolino;L. Pitis;H. Kim;J. Rothberg;S. Wasserbaech;S. Armstrong;L. Bellantoni;D. Cinabro;J. Conway;P. Elmer;Z. Feng;D. Ferguson;Y. Gao;S. Gonzalez;J. Grahl;J. Harton;O. Hayes;H. Hu;S. Jin;R. Johnson;J. Kile;P. McNamara;J. Nielsen;W. Orejudos;Y. Pan;Y. Saadi;I. Scott;V. Sharma;A. Walsh;J. Walsh;J. Wear;S. Wu;X. Wu;J. Yamartino;G. Zobernig

2000

Abstract

The properties of the Z resonance are measured from the analysis of 4.5 million Z decays into fermion pairs collected with the ALEPII detector at LEP. The data are consistent with lepton universality. The resonance parameters are measured to be M(Z) = (91.1885 +/- 0.0031) GeV/c(2), Gamma(Z) = (2.4941 +/- 0.0043) GeV, sigma(had)(0) = (41.559 +/- 0.058) nb and, combining the three lepton flavours, R(l) = 20.725 +/- 0.039. The corresponding number of light neutrino species is N(v) = 2.983 +/- 0.013 and the strong coupling constant is alpha(s)(M(Z)) = 0.114 +/- 0.004 +/- 0.002(QCD) + 0.005 log(10) [M(H)/150 GeV/c(2)]. The lepton pair forward-backward asymmetry is measured to be A(FB)(0,l) = 0.0173 +/- 0.0016 from which the effective weak mixing angle is described: sin(2) theta(eff)(lept) = 0.23089 +/- 0.00089. The measurement of the leptonic width Gamma(ll) = 84.02 +/- 0.15 MeV leads to a determination of the effective rho parameter rho(eff)(lept) = 1.0064 +/- 0.0018. The data support the Standard Model and favour a light Higgs.

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	Settori scientifico-disciplinari dell'articolo
	
			Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
		
	Data di pubblicazione
	
			2000
		
	Rivista in ANCE
	
			THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
		
	DOI
	
			https://dx.doi.org/10.1007/s100520050732
		
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			01 - Articolo su periodico

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