W+W- production cross section and W branching fractions in e(+)e(-) collisions at 189 GeV

Authors
Abbiendi, G Ackerstaff, K Ainsley, C Akesson, PF Alexander, G Allison, J Anderson, KJ Arcelli, S Asai, S Ashby, SF Axen, D Azuelos, G Bailey, I Ball, AH Barberio, E Barlow, RJ Baumann, S Behnke, T Bell, KW Bella, G Bellerive, A Benelli, G Bentvelsen, S Bethke, S Biebel, O Bloodworth, IJ Boeriu, O Bock, P Bohme, J Bonacorsi, D Boutemeur, M Braibant, S Bright-Thomas, P Brigliadori, L Brown, RM Burckhart, HJ Cammin, J Capiluppi, P Carnegie, RK Carter, AA Carter, JR Chang, CY Charlton, DG Clarke, PEL Clay, E Cohen, I Cooke, OC Couchman, J Couyoumtzelis, C Coxe, RL Csilling, A Cuffiani, M Dado, S Dallavalle, GM Dallison, S de Roeck, A de Wolf, E Dervan, P Desch, K Dienes, B Dixit, MS Donkers, M Dubbert, J Duchovni, E Duckeck, G Duerdoth, IP Estabrooks, PG Etzion, E Fabbri, F Fanti, M Feld, L Ferrari, P Fiedler, F Fleck, I Ford, M Frey, A Furtjes, A Futyan, DI Gagnon, P Gary, JW Gaycken, G Geich-Gimbel, C Giacomelli, G Giacomelli, P Glenzinski, D Goldberg, J Grandi, C Graham, K Gross, E Grunhaus, J Gruwe, M Gunther, PO Hajdu, C Hanson, GG Hansroul, M Hapke, M Harder, K Harel, A Harin-Dirac, M Hauke, A Hauschild, M Hawkes, CM Hawkings, R Hemingway, RJ Hensel, C Herten, G Heuer, RD Hill, JC Hocker, A Hoffman, K Homer, RJ Honma, AK Horvath, D Hossain, KR Howard, R Huntemeyer, P Igo-Kemenes, P Ishii, K Jacob, FR Jawahery, A Jeremie, H Jones, CR Jovanovic, P Junk, TR Kanaya, N Kanzaki, J Karapetian, G Karlen, D Kartvelishvili, V Kawagoe, K Kawamoto, T Keeler, RK Kellogg, RG Kennedy, BW Kim, DH Klein, K Klier, A Kluth, S Kobayashi, T Kobel, M Kokott, TP Komamiya, S Kowalewski, RV Kress, T Krieger, P von Krogh, J Kuhl, T Kupper, M Kyberd, P Lafferty, GD Landsman, H Lanske, D Lawson, I Layter, JG Leins, A Lellouch, D Letts, J Levinson, L Liebisch, R Lillich, J List, B Littlewood, C Lloyd, AW Lloyd, SL Loebinger, FK Long, GD Losty, MJ Lu, J Ludwig, J Macchiolo, A Macpherson, A Mader, W Marcellini, S Marchant, TE Martin, AJ Martin, JP Martinez, G Mashimo, T Mattig, P McDonald, WJ McKenna, J McMahon, TJ McPherson, RA Meijers, F Mendez-Lorenzo, P Menges, W Merritt, FS Mes, H Michelini, A Mihara, S Mikenberg, G Miller, DJ Mohr, W Montanari, A Mori, T Nagai, K Nakamura, I Neal, HA Nisius, R O'Neale, SW Oakham, FG Odorici, F Ogren, HO Oh, A Okpara, A Oreglia, MJ Orito, S Pasztor, G Pater, JR Patrick, GN Patt, J Pfeifenschneider, P Pilcher, JE Pinfold, J Plane, DE Poli, B Polok, J Pooth, O Przybycien, M Quadt, A Rembser, C Renkel, P Rick, H Rodning, N Roney, JM Rosati, S Roscoe, K Rossi, AM Rozen, Y Runge, K Runolfsson, O Rust, DR Sachs, K Saeki, T Sahr, O Sarkisyan, EKG Sbarra, C Schaile, AD Schaile, O Scharff-Hansen, P Schroder, M Schumacher, M Schwick, C Scott, WG Seuster, R Shears, TG Shen, BC Shepherd-Themistocleous, CH Sherwood, P Siroli, GP Skuja, A Smith, AM Snow, GA Sobie, R Soldner-Rembold, S Spagnolo, S Sproston, M Stahl, A Stephens, K Stoll, K Strom, D Strohmer, R Stumpf, L Surrow, B Talbot, SD Tarem, S Taylor, RJ Teuscher, R Thiergen, M Thomas, J Thomson, MA Torrence, E Towers, S Toya, D Trefzger, T Trigger, I Trocsanyi, Z Tsur, E Turner-Watson, MF Ueda, I Vachon, B Vannerem, P Verzocchi, M Voss, H Vossebeld, J Waller, D Ward, CP Ward, DR Watkins, PM Watson, AT Watson, NK Wells, PS Wengler, T Wermes, N Wetterling, D White, JS Wilson, GW Wilson, JA Wyatt, TR Yamashita, S Zacek, V Zer-Zion, D
Citation
G. Abbiendi et al., W+W- production cross section and W branching fractions in e(+)e(-) collisions at 189 GeV, PHYS LETT B, 493(3-4), 2000, pp. 249-265
Citations number
49
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
493
Issue
3-4
Year of publication
2000
Pages
249 - 265
Database
ISI
SICI code
0370-2693(20001116)493:3-4<249:WPCSAW>2.0.ZU;2-N
Abstract
From a data sample of 183 pb(-1) recorded at a center-of-mass energy of roo ts=189 GeV with the OPAL detector at LEP, 3068 W-pair candidate events are selected. Assuming Standard Model W boson decay branching fractions, the W- pair production cross section is measured to be sigma (WW) = 16.30 +/- 0.34 (stat.) +/- 0.18(syst.) pb. When combined with previous OPAL measurements, the W boson branching fraction to hadrons is determined to be 68.32 +/- 0.6 1(stat.) +/- 0.28(syst.)% assuming lepton universality. These results are c onsistent with Standard Model expectations. (C) 2000 Published by Elsevier Science B.V.