Measurement of the W mass by direct reconstruction in e(+)e(-) collisions at 172 GeV

Barate, R; Buskulic, D; Decamp, D; Ghez, P; Goy, C; Jezequel, S; Lees, Jp; Lucotte, A; Minard, Mn; Nief, Jy; Pietrzyk, B; Boix, G; Casado, Mp; Chmeissani, M; Crespo, Jm; Delfino, M; Fernandez, E; Fernandez Bosman, M; Garrido, L; Grauges, E; Juste, A; Martinez, M; Merino, G; Miquel, R; Mir, Lm; Morawitz, P; Park, Ic; Pascual, A; Perlas, Ja; Riu, I; Sanchez, F; Colaleo, A; Creanza, D; de Palma, M; Gelao, G; 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; Alemany, R; Becker, U; Bright Thomas, P; Casper, D; Cattaneo, M; Cerutti, F; Ciulli, V; Dissertori, G; Drevermann, H; Forty, Rw; Frank, M; Gianotti, F; Hagelberg, R; Hansen, Jb; Harvey, J; Janot, P; Jost, B; Lehraus, I; Mato, P; Minten, A; Moneta, L; Pacheco, A; Pusztaszeri, Jf; Ranjard, F; Rolandi, Luigi; Rousseau, D; Schlatter, D; Schmitt, M; Schneider, O; Tejessy, W; Teubert, F; Tomalin, Ir; Vreeswijk, M; Wachsmuth, H; Wagner, 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, Jc; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rosnet, P; Fearnley, T; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Rensch, B; Waananen, A; Daskalakis, G; Kyriakis, A; Markou, C; Simopoulou, E; Vayaki, A; Blondel, A; Brient, Jc; Machefert, F; Rouge, A; Rumpf, M; Valassi, A; Videau, H; Boccali, T; Focardi, E; Parrini, G; Zachariadou, K; Cavanaugh, R; Corden, M; Georgiopoulos, C; Huehn, T; Jaffe, De; 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; Curtis, L; Dorris, Sj; Halley, Aw; Lynch, Jg; Negus, P; O'Shea, V; Raine, C; Scarr, Jm; Smith, K; Teixeira Dias, P; Thompson, As; Ward, Jj; Buchmuller, O; Dhamotharan, S; Geweniger, C; Graefe, G; 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; Moutoussi, A; Nash, J; Sedgbeer, Jk; Spagnolo, P; Williams, Md; Ghete, Vm; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Betteridge, Ap; Bowdery, Ck; Buck, Pg; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Jones, Rwl; Whelan, Ep; Williams, Mi; Giehl, I; Hoffmann, C; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; van Gemmeren, P; Zeitnitz, C; Aubert, Jj; Benchouk, C; Bonissent, A; Bujosa, G; Carr, J; Coyle, P; Ealet, A; Fouchez, D; Leroy, O; Motsch, F; Payre, P; Talby, M; Sadouki, A; Thulasidas, M; Tilquin, A; Trabelsi, K; Aleppo, M; Antonelli, M; Ragusa, F; Berlich, R; Blum, W; Buscher, V; Dietl, H; Ganis, G; Gotzhein, C; Kroha, H; Lutjens, G; Lutz, G; Mannert, C; Manner, W; Moser, Hg; Richter, R; Rosado Schlosser, A; Schael, S; Settles, R; Seywerd, H; Stenzel, H; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Chen, S; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Hocker, A; Jacholkowska, A; Kado, Mm; Kim, Dw; Le Diberder, F; Lefrancois, J; Lutz, Am; Schune, Mh; Serin, L; Tournefier, E; Veillet, Jj; Videau, I; Zerwas, D; Azzurri, P; Bagliesi, G; Bettarini, S; Bozzi, C; Calderini, G; Dell'Orso, R; Fantechi, R; Ferrante, I; Giassi, A; Gregorio, A; Ligabue, Franco; Lusiani, Alberto; Marrocchesi, Ps; Messineo, A; Palla, F; Rizzo, G; Sanguinetti, G; Sciaba, A; Sguazzoni, G; Steinberger, J; Tenchini, R; Vannini, C; Venturi, A; Verdini, Pg; Blair, Ga; Bryant, Lm; Chambers, Jt; Coles, J; Green, Mg; Medcalf, T; Perrodo, P; Strong, Ja; von Wimmersperg Toeller JH,; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Maley, P; Norton, Pr; Thompson, Jc; Wright, Ae; Bloch Devaux, B; Colas, P; Fabbro, B; Faif, G; Lancon, E; Lemaire, Mc; Locci, E; Perez, P; Przysiezniak, H; Rander, J; Renardy, Jf; Rosowsky, A; Roussarie, A; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Kim, Hy; Konstantinidis, N; Litke, Am; McNeil, Ma; Taylor, G; Booth, Cn; Brew, Caj; Cartwright, S; Combley, F; Kelly, Ms; Lehto, M; Reeve, J; Thompson, Lf; Affholderbach, K; Bohrer, A; Brandt, S; Cowan, G; Foss, J; Grupen, C; Smolik, L; Stephan, F; Apollonio, M; Bosisio, L; Della Marina, R; Giannini, G; Gobbo, B; Musolino, G; Putz, J; Rothberg, J; Wasserbaech, S; Williams, Rw; Armstrong, Sr; Charles, E; Elmer, P; Ferguson, Dps; Gao, Y; Gonzalez, S; Greening, Tc; Hayes, Oj; Hu, H; Jin, S; McNamara, Pa; Nachtman, Jm; Nielsen, J; Orejudos, W; Pan, Yb; Saadi, Y; Scott, Ij; Walsh, J; Wu, Sl; Wu, X; Yamartino, Jm; Zobernig, G.

doi:10.1016/S0370-2693(98)00062-8

The mass of the W boson is obtained from reconstructed invariant mass distributions in W-pair events. The sample of W pairs is selected from 10.65 pb(-1) collected with the ALEPH detector at a mean centre-of-mass energy of 172.09 GeV. The invariant mass distribution of simulated events are fitted to the experimental; distributions and the following W masses are obtained: WW --> <q(q)over bar><q(q)over bar>, m(W) = 81.30 +/- 0.47(stat.) +/- 0.11(syst.)GeV/c(2), WW --> l nu<q(q)over bar> (l=e,mu), m(W) = 80.54 +/- 0.47(stat.) +/- 0.11(syst.)GeV/c(2), WW --> tau nu<q(q)over tilde>, m(W) = 79.56 +/- 1.08(stat.) +/- 0.23(syst.) GeV/c(2). The statistical errors are the expected errors for Monte Carlo samples of the same integrated luminosity as the data. The combination of these three measurements gives: m(W) = 80.80 +/- 0.32(stat.) +/- 0.11(syst.) +/- 0.03(LEP energy) GeV/c(2). (C) 1998 Elsevier Science B.V.

Titolo:	Measurement of the W mass by direct reconstruction in e(+)e(-) collisions at 172 GeV
Autori:	Barate R Buskulic D Decamp D Ghez P Goy C Jezequel S Lees JP Lucotte A Minard MN Nief JY Pietrzyk B Boix G Casado MP Chmeissani M Crespo JM Delfino M Fernandez E Fernandez Bosman M Garrido L Grauges E Juste A Martinez M Merino G Miquel R Mir LM Morawitz P Park IC Pascual A Perlas JA Riu I Sanchez F Colaleo A Creanza D de Palma M Gelao G 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 Alemany R Becker U Bright Thomas P Casper D Cattaneo M Cerutti F Ciulli V Dissertori G Drevermann H Forty RW Frank M Gianotti F Hagelberg R Hansen JB Harvey J Janot P Jost B Lehraus I Mato P Minten A Moneta L Pacheco A Pusztaszeri JF Ranjard F ROLANDI, LUIGI Rousseau D Schlatter D Schmitt M Schneider O Tejessy W Teubert F Tomalin IR Vreeswijk M Wachsmuth H Wagner 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 JC Pallin D Perret P Podlyski F Proriol J Rosnet P Fearnley T Hansen JD Hansen JR Hansen PH Nilsson BS Rensch B Waananen A Daskalakis G Kyriakis A Markou C Simopoulou E Vayaki A Blondel A Brient JC Machefert F Rouge A Rumpf M Valassi A Videau H Boccali T Focardi E Parrini G Zachariadou K Cavanaugh R Corden M Georgiopoulos C Huehn T Jaffe DE 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 Curtis L Dorris SJ Halley AW Lynch JG Negus P O'Shea V Raine C Scarr JM Smith K Teixeira Dias P Thompson AS Ward JJ Buchmuller O Dhamotharan S Geweniger C Graefe G 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 Moutoussi A Nash J Sedgbeer JK Spagnolo P Williams MD Ghete VM Girtler P Kneringer E Kuhn D Rudolph G Betteridge AP Bowdery CK Buck PG Colrain P Crawford G Finch AJ Foster F Hughes G Jones RWL Whelan EP Williams MI Giehl I Hoffmann C Jakobs K Kleinknecht K Quast G Renk B Rohne E Sander HG van Gemmeren P Zeitnitz C Aubert JJ Benchouk C Bonissent A Bujosa G Carr J Coyle P Ealet A Fouchez D Leroy O Motsch F Payre P Talby M Sadouki A Thulasidas M Tilquin A Trabelsi K Aleppo M Antonelli M Ragusa F Berlich R Blum W Buscher V Dietl H Ganis G Gotzhein C Kroha H Lutjens G Lutz G Mannert C Manner W Moser HG Richter R Rosado Schlosser A Schael S Settles R Seywerd H Stenzel H Wiedenmann W Wolf G Boucrot J Callot O Chen S Davier M Duflot L Grivaz JF Heusse P Hocker A Jacholkowska A Kado MM Kim DW Le Diberder F Lefrancois J Lutz AM Schune MH Serin L Tournefier E Veillet JJ Videau I Zerwas D Azzurri P Bagliesi G Bettarini S Bozzi C Calderini G Dell'Orso R Fantechi R Ferrante I Giassi A Gregorio A LIGABUE, FRANCO LUSIANI, Alberto Marrocchesi PS Messineo A Palla F Rizzo G Sanguinetti G Sciaba A Sguazzoni G Steinberger J Tenchini R Vannini C Venturi A Verdini PG Blair GA Bryant LM Chambers JT Coles J Green MG Medcalf T Perrodo P Strong JA von Wimmersperg Toeller JH Botterill DR Clifft RW Edgecock TR Haywood S Maley P Norton PR Thompson JC Wright AE Bloch Devaux B Colas P Fabbro B Faif G Lancon E Lemaire MC Locci E Perez P Przysiezniak H Rander J Renardy JF Rosowsky A Roussarie A Trabelsi A Vallage B Black SN Dann JH Kim HY Konstantinidis N Litke AM McNeil MA Taylor G Booth CN Brew CAJ Cartwright S Combley F Kelly MS Lehto M Reeve J Thompson LF Affholderbach K Bohrer A Brandt S Cowan G Foss J Grupen C Smolik L Stephan F Apollonio M Bosisio L Della Marina R Giannini G Gobbo B Musolino G Putz J Rothberg J Wasserbaech S Williams RW Armstrong SR Charles E Elmer P Ferguson DPS Gao Y Gonzalez S Greening TC Hayes OJ Hu H Jin S McNamara PA Nachtman JM Nielsen J Orejudos W Pan YB Saadi Y Scott IJ Walsh J Wu SL Wu X Yamartino JM Zobernig G. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	1998
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	The mass of the W boson is obtained from reconstructed invariant mass distributions in W-pair events. The sample of W pairs is selected from 10.65 pb(-1) collected with the ALEPH detector at a mean centre-of-mass energy of 172.09 GeV. The invariant mass distribution of simulated events are fitted to the experimental; distributions and the following W masses are obtained: WW --> <q(q)over bar><q(q)over bar>, m(W) = 81.30 +/- 0.47(stat.) +/- 0.11(syst.)GeV/c(2), WW --> l nu<q(q)over bar> (l=e,mu), m(W) = 80.54 +/- 0.47(stat.) +/- 0.11(syst.)GeV/c(2), WW --> tau nu<q(q)over tilde>, m(W) = 79.56 +/- 1.08(stat.) +/- 0.23(syst.) GeV/c(2). The statistical errors are the expected errors for Monte Carlo samples of the same integrated luminosity as the data. The combination of these three measurements gives: m(W) = 80.80 +/- 0.32(stat.) +/- 0.11(syst.) +/- 0.03(LEP energy) GeV/c(2). (C) 1998 Elsevier Science B.V.
Handle:	http://hdl.handle.net/11384/4524
Appare nelle tipologie:	1.1 Articolo in rivista

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