Measurement of W-pair production in e+e- collisions at 183 GeV

6533b830fe1ef96bd12967c6

RESEARCH PRODUCT

Measurement of W-pair production in e+e- collisions at 183 GeV

R. Barate D. Decamp Philippe Ghez C. Goy S. Jezequel J.p. Lees F. Martin E. Merle M.n. Minard B. Pietrzyk R. Alemany M.p. Casado M. Chmeissani J.m. Crespo E. Fernandez M. Fernandez-bosman L. Garrido E. Grauges A. Juste M. Martinez G. Merino R. Miquel L.m. Mir P. Morawitz A. Pacheco I.c. Park I. Riu A. Colaleo D. Creanza M. De Palma G. Gelao 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 U. Becker G. Boix M. Cattaneo V. Ciulli G. Dissertori H. Drevermann R.w. Forty M. Frank F. Gianotti A.w. Halley J.b. Hansen John Harvey P. Janot B. Jost I. Lehraus O. Leroy C. Loomis P. Maley P. Mato A. Minten A. Moutoussi F. Ranjard Gigi Rolandi D. Rousseau D. Schlatter M. Schmitt O. Schneider W. Tejessy F. Teubert I.r. Tomalin E. Tournefier M. Vreeswijk A.e. Wright Z. Ajaltouni F. Badaud G. Chazelle O. Deschamps S. Dessagne A. Falvard C. Ferdi P. Gay C. Guicheney P. Henrard J. Jousset B. Michel S. Monteil J.c. Montret D. Pallin P. Perret F. Podlyski J.d. Hansen J.r. Hansen P.h. Hansen B.s. Nilsson B. Rensch A. Waananen G. Daskalakis A. Kyriakis C. Markou E. Simopoulou A. Vayaki A. Blondel J.c. Brient F. Machefert A. Rouge M. Swynghedauw R. Tanaka A. Valassi 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 F. Cerutti V. Chiarella P. Laurelli G. Mannocchi F. Murtas G.p. Murtas L. Passalacqua M. Pepe-altarelli M. Chalmers L. Curtis J.g. Lynch P. Negus V. O'shea B. Raeven C. Raine D. Smith P. Teixeira-dias A.s. Thompson J.j. Ward O. Buchmuller S. Dhamotharan C. Geweniger P. Hanke G. Hansper V. Hepp E.e. Kluge A. Putzer J. Sommer K. Tittel S. Werner M. Wunsch R. Beuselinck D.m. Binnie W. Cameron P.j. Dornan M. Girone S. Goodsir N. Marinelli E.b. Martin J. Nash J. Nowell A. Sciaba J.k. Sedgbeer P. Spagnolo Evelyn J. Thomson M.d. Williams V.m. Ghete P. Girtler E. Kneringer D. Kuhn G. Rudolph A.p. Betteridge C.k. Bowdery P.g. Buck P. Colrain G. Crawford G. Ellis A.j. Finch F. Foster G. Hughes R.w.l. Jones N.a. Robertson M. Williams P. Van Gemmeren I. Giehl F. Holldorfer C. Hoffmann K. Jakobs K. Kleinknecht M. Krocker H.a. Nurnberger G. Quast B. Renk E. Rohne H.g. Sander S. Schmeling H. Wachsmuth C. Zeitnitz T. Ziegler J.j. Aubert C. Benchouk A. Bonissent J. Carr P. Coyle A. Ealet D. Fouchez F. Motsch P. Payre M. Talby M. Thulasidas A. Tilquin M. Aleppo M. Antonelli F. Ragusa R. Berlich Volker Buescher H. Dietl G. Ganis K. Huttmann G. Lutjens C. Mannert W. Manner H.g. Moser S. Schael R. Settles H. Seywerd H. Stenzel W. Wiedenmann G. Wolf P. Azzurri J. Boucrot O. Callot S. Chen M. Davier L. Duflot J.f. Grivaz Ph. Heusse A. Jacholkowska M. Kado J. Lefrancois L. Serin J.j. Veillet I. Videau J.b. De Vivie De Regie D. Zerwas Giuseppe Bagliesi S. Bettarini T. Boccali C. Bozzi G. Calderini R. Dell'orso R. Fantechi I. Ferrante A. Giassi A. Gregorio F. Ligabue A. Lusiani P.s. Marrocchesi A. Messineo F. Palla G. Rizzo G. Sanguinetti A. Sciaba G. Sguazzoni R. Tenchini C. Vannini A. Venturi P.g. Verdini G.a. Blair J.t. Chambers J. Coles G. Cowan M.g. Green D.e. Hutchcroft L.t. Jones T. Medcalf J.a. Strong J.h. Von Wimmersperg-toeller D.r. Botterill R.w. Clifft T.r. Edgecock P.r. Norton J.c. Thompson Brigitte Bloch-devaux P. Colas B. Fabbro G. Faif E. Lancon M.c. Lemaire E. Locci P. Perez H. Przysiezniak J. Rander J.f. Renardy A. Rosowsky A. Trabelsi B. Tuchming B. Vallage S.n. Black J.h. Dann H.y. Kim N. Konstantinidis A.m. Litke M.a. Mcneil G. Taylor C.n. Booth S.l. Cartwright F. Combley P.n. Hodgson M.s. Kelly M.h. Lehto L.f. Thompson K. Affholderbach Armin Boehrer S. Brandt J. Foss C. Grupen A. Misiejuk G. Prange U. Sieler G. Giannini B. Gobbo J. Putz J.e. Rothberg S. Wasserbaech R.w. Williams S.r. Armstrong E. Charles P. Elmer D.p.s. Ferguson Y. Gao S. Gonzalez T.c. Greening O.j. Hayes H. Hu S. Jin G. Mamier P.a. Mcnamara J.m. Nachtman J. Nielsen W. Orejudos Y.b. Pan Y. Saadi I.j. Scott M. Vogt J. Walsh S.l. Wu X. Wu G. Zobernig

subject

Nuclear and High Energy Physics Aleph Particle physics ALEPH Experiment; LEP; W-pair production Electron–positron annihilation Hadron FOS: Physical sciences 01 natural sciences High Energy Physics - Experiment ALEPH Experiment High Energy Physics - Experiment (hep-ex)0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physics Nuclear Experiment Bhabha scattering Physics W-pair production 010308 nuclear & particles physics Branching fraction Cabibbo–Kobayashi–Maskawa matrix LEP Pair production High Energy Physics::Experiment Particle Physics - Experiment Lepton

description

The production of W+W- pairs is analysed in a data sample collected by ALEPH at a mean centre-of-mass energy of 182.7 GeV, corresponding to an integrated luminosity of 57 pb-1. Cross sections are given for different topologies of W decays into leptons or hadrons. Under Standard Model assumptions for the W-pair production and decay, the W-pair cross section is measured to be 15.57+-0.62(stat.)+-0.29(syst.) pb. Using also the W-pair data samples collected by ALEPH at lower centre-of-mass energies, the decay branching ratio of the W boson into hadrons is measured to be B(W->hadrons)= 68.93+-1.21(stat.)+-0.51(syst.)%, allowing a determination of the CKM matrix element |Vcs|= 1.043 +- 0.058(stat.) +- 0.026(syst.). The agreement of the cross sections with the Standard Model prediction allows a limit to be set on the W decay rate to undetectable final states.

year	journal	country	edition	language
1999-03-22

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