Measurement of the Z resonance parameters at LEP

Barate, R; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Lucotte, A; Merle, E; Minard, Mn; Pietrzyk, B; Alemany, R; Casado, Mp; Chmeissani, M; Comas, P; Crespo, Jm; Fernandez, E; Fernandez-Bosman, M; Garrido, L; Grauges, E; Juste, A; Martinez, M; Merino, G; Miquel, R; Mir, Lm; Orteu, S; Pacheco, A; Park, Ic; 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, Rw; Frank, M; Greening, Tc; Hagelberg, R; Halley, Aw; Hansen, Jb; 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, Ir; Tournefier, E; Veenhof, R; Wiedenmann, W; Wright, Ae; 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, Jc; Pallin, D; Perret, P; Podlyski, F; Bertelsen, H; Fernley, T; Hansen, F; Hansen, Jd; Hansen, Jr; Hansen, Ph; Lindahl, A; Mollerud, R; Nilsson, Bs; Rensch, B; Waananen, A; Daskalakis, G; Kyriakis, A; Markou, C; Simopoulou, E; Siotis, I; Vayaki, A; Blondel, A; Bonneaud, G; Brient, Jc; 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, Gp; Passalacqua, L; Pepe-Altarelli, M; Picchi, P; Colrain, P; ten Have, I; Hughes, Is; Knowles, Ig; Lynch, Jg; Morton, Wt; Raine, C; Reeves, P; O'Shea, V; Scarr, Jm; Smith, K; Thompson, As; Turnbull, Rm; Buchmuller, O; Dhamotharan, S; Geweniger, C; Hanke, P; Hansper, G; Hepp, V; Kluge, Ee; Putzer, A; Sommer, J; Tittel, K; Werner, S; Wunsch, M; Beuselinck, R; Binnie, Dm; Cameron, W; Dornan, Pj; Girone, M; Goodsir, S; Martin, Eb; Marinelli, N; Nash, J; Sciaba, A; Sedgbeer, Jk; Thomson, E; Williams, Md; Ghete, Vm; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Bowdery, Ck; Buck, Pg; Finch, Aj; Foster, F; Hughes, G; Jones, Rwl; Keemer, Nr; Robertson, Na; Sloan, T; Snow, Sw; Williams, Mi; Bauerdick, Lat; van Gemmeren, P; Giehl, I; Jakobs, K; Kasemann, M; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; Schmelling, M; Wachsmuth, H; Wanke, R; Zeitnitz, C; Aubert, Jj; Benchouk, C; Bonissent, A; Carr, J; Coyle, P; Etienne, F; Motsch, F; Payre, P; Rousseau, D; Talby, M; Thulasidas, M; Aleppo, M; Antonelli, M; Ragusa, F; Buscher, V; Dietl, H; Ganis, G; Huttmann, K; Lutjens, G; Mannert, C; Manner, W; Moser, Hg; 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, Jf; Heusse, P; Jacholkowska, A; Le Diberder, F; Lefrancois, J; Lutz, Am; Schune, Mh; Veillet, Jj; 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, Ps; Messineo, A; Palla, F; Rizzo, G; Sanguinetti, G; Sguazzoni, G; Steinberger, J; Tenchini, R; Vannini, C; Venturi, A; Verdini, Pg; Blair, Ga; Cowan, G; Green, Mg; Medcalf, T; Strong, Ja; von Wimmersperg-Toeller, Jh; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Edwards, M; Haywood, Sj; Norton, Pr; Thompson, Jc; Bloch-Devaux, B; Colas, P; Emery, S; Kozanecki, W; Lancon, E; Lemaire, Mc; Locci, E; Perez, P; Rander, J; Renardy, Jf; Roussarie, A; Schuller, Jp; Schwindling, J; Vallage, B; Black, Sn; Dann, Jh; Kim, Hy; Konstantinidis, N; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Cartwright, S; Combley, F; Lehto, M; Thompson, Lf; 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, Sr; Bellantoni, L; Cinabro, D; Conway, Js; Elmer, P; Feng, Z; Ferguson, Dps; Gao, Y; Gonzalez, S; Grahl, J; Harton, Jl; Hayes, Oj; Hu, H; Jin, S; Johnson, Rp; Kile, J; Mcnamara, Pa; Nielsen, J; Orejudos, W; Pan, Yb; Saadi, Y; Scott, Ij; Sharma, V; Walsh, Am; Walsh, J; Wear, J; Wu, Sl; Wu, X; Yamartino, Jm; Zobernig Gti, A; Zetti, F; Zhang, L; Zhang, S; Zhang, W; Zucchelli,

doi:10.1007/s100520000319

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.

Autori interni:	BETTARINI, STEFANO FERRANTE, ISIDORO FIDECARO, FRANCESCO MESSINEO, ALBERTO MARIA RIZZO, GIULIANA
Autori:	Barate R; Decamp D; Ghez P; Goy C; Lees JP; Lucotte A; Merle E; Minard MN; Pietrzyk B; Alemany R; Casado MP; Chmeissani M; Comas P; Crespo JM; Fernandez E; Fernandez-Bosman M; Garrido L; Grauges E; Juste A; Martinez M; Merino G; Miquel R; Mir LM; Orteu S; Pacheco A; Park IC; 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 RW; Frank M; Greening TC; Hagelberg R; Halley AW; Hansen JB; 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 IR; Tournefier E; Veenhof R; Wiedenmann W; Wright AE; 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 JC; Pallin D; Perret P; Podlyski F; Bertelsen H; Fernley T; Hansen F; Hansen JD; Hansen JR; Hansen PH; Lindahl A; Mollerud R; Nilsson BS; Rensch B; Waananen A; Daskalakis G; Kyriakis A; Markou C; Simopoulou E; Siotis I; Vayaki A; Blondel A; Bonneaud G; Brient JC; 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 GP; Passalacqua L; Pepe-Altarelli M; Picchi P; Colrain P; ten Have I; Hughes IS; Knowles IG; Lynch JG; Morton WT; Raine C; Reeves P; O'Shea V; Scarr JM; Smith K; Thompson AS; Turnbull RM; Buchmuller O; Dhamotharan S; Geweniger C; Hanke P; Hansper G; Hepp V; Kluge EE; Putzer A; Sommer J; Tittel K; Werner S; Wunsch M; Beuselinck R; Binnie DM; Cameron W; Dornan PJ; Girone M; Goodsir S; Martin EB; Marinelli N; Nash J; Sciaba A; Sedgbeer JK; Thomson E; Williams MD; Ghete VM; Girtler P; Kneringer E; Kuhn D; Rudolph G; Bowdery CK; Buck PG; Finch AJ; Foster F; Hughes G; Jones RWL; Keemer NR; Robertson NA; Sloan T; Snow SW; Williams MI; Bauerdick LAT; van Gemmeren P; Giehl I; Jakobs K; Kasemann M; Kleinknecht K; Quast G; Renk B; Rohne E; Sander HG; Schmelling M; Wachsmuth H; Wanke R; Zeitnitz C; Aubert JJ; Benchouk C; Bonissent A; Carr J; Coyle P; Etienne F; Motsch F; Payre P; Rousseau D; Talby M; Thulasidas M; Aleppo M; Antonelli M; Ragusa F; Buscher V; Dietl H; Ganis G; Huttmann K; Lutjens G; Mannert C; Manner W; Moser HG; 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 JF; Heusse P; Jacholkowska A; Le Diberder F; Lefrancois J; Lutz AM; Schune MH; Veillet JJ; 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 PS; Messineo A; Palla F; Rizzo G; Sanguinetti G; Sguazzoni G; Steinberger J; Tenchini R; Vannini C; Venturi A; Verdini PG; Blair GA; Cowan G; Green MG; Medcalf T; Strong JA; von Wimmersperg-Toeller JH; Botterill DR; Clifft RW; Edgecock TR; Edwards M; Haywood SJ; Norton PR; Thompson JC; Bloch-Devaux B; Colas P; Emery S; Kozanecki W; Lancon E; Lemaire MC; Locci E; Perez P; Rander J; Renardy JF; Roussarie A; Schuller JP; Schwindling J; Vallage B; Black SN; Dann JH; Kim HY; Konstantinidis N; Litke AM; McNeil MA; Taylor G; Booth CN; Cartwright S; Combley F; Lehto M; Thompson LF; 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 SR; Bellantoni L; Cinabro D; Conway JS; Elmer P; Feng Z; Ferguson DPS; Gao Y; Gonzalez S; Grahl J; Harton JL; Hayes OJ; Hu H; Jin S; Johnson RP; Kile J; McNamara PA; Nielsen J; Orejudos W; Pan YB; Saadi Y; Scott IJ; Sharma V; Walsh AM; Walsh J; Wear J; Wu SL; Wu X; Yamartino JM; Zobernig Gti A; Zetti F; Zhang L; Zhang S; Zhang W; Zucchelli
Titolo:	Measurement of the Z resonance parameters at LEP
Anno del prodotto:	2000
Digital Object Identifier (DOI):	10.1007/s100520000319
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