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, L; 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, F; Lusiani, A; 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

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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.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/4524

Titolo:	Measurement of the W mass by direct reconstruction in e(+)e(-) collisions at 172 GeV
Autori interni:	LIGABUE, FRANCO ROLANDI, LUIGI LUSIANI, Alberto
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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