Measurement of W-pair production in $e^+ e^-$ collisions at 189 GeV

6533b81ffe1ef96bd1277d27

RESEARCH PRODUCT

Measurement of W-pair production in $e^+ e^-$ collisions at 189 GeV

M. Chalmers P. Ghez B. Bloch-devaux Ziad Ajaltouni Richard Cavanaugh H. Hu Giuseppe Zito F. Bossi A. Blondel S.r. Armstrong T. Kachelhoffer A. Vayaki M. Fernandez-bosman A. Putzer D. M. Binnie Ettore Focardi John Rander S. Schael A. Trabelsi M. Wunsch Stephane Jezequel H. He Y. Saadi Giacomo Sguazzoni S. Dhamotharan J. Putz R. Barate M. De Palma David J. Smith N. Konstantinidis R. White S. Jin H. G. Moser Marumi Kado L. Rolandi Gavin Davies S. Gonzalez K. Tittel Konrad Kleinknecht M. Chmeissani P. Payre A. Tilquin F. Gianotti G. Bencivenni Reisaburo Tanaka P. Seager C. K. Bowdery S.n. Black A. Wäänänen F. Podlyski Andrea Valassi Georg Zobernig A. J. Finch Georgios Daskalakis Laurent Serin W. Tejessy Giuseppe Iaselli Gerardo Ganis Markus Frank M. Aleppo D. Fouchez H. Wachsmuth Simone Gilardoni J. Nielsen Fabrizio Palla Fabrizio Palla G. B. Taylor P. Tempesta J. Nowell M. G. Green L. Garrido M. Swynghedauw E. Tournefier A. Antonelli Andrea Venturi A. Misiejuk B. Gobbo M. C. Lemaire E. Fernandez L. Passalacqua Dominique Pallin Ian R Tomalin P. Teixeira-dias Hasko Stenzel Jean-claude Montret K. Affholderbach J. Boucrot M. Davier J. Hess F. Foster Vitaliano Chiarella P. A. Mcnamara G. Sanguinetti R. Settles R. Settles G. Parrini J. M. Crespo W. Orejudos David Hutchcroft B. Raeven D.p. Clarke H.y. Kim A. Bonissent Patrick Janot R. Alemany A. Pacheco Boris Tuchming C. Loomis P. Henrard H. Drevermann Duccio Abbaneo Elizabeth Locci J. D. Hansen J. Coles M H. Lehto J.m. Pascolo W. Zhao Q. Ouyang Lei Zhang N. A. Robertson F. Combley Francesco Ragusa Peter Elmer Claus Grupen G. Ellis Oliver Buchmuller R. W. Clifft B. Renk Tommaso Boccali Jf Renardy A. Sciabà T. R. Edgecock Jie Zhang K. Hüttmann Ph. Heusse F. F. Martin Paul Hanke G. Giannini S. Brandt O.j. Hayes P. Perret F. Cerutti Val O'shea J.j. Ward F. Ranjard Karl Jakobs H. G. Sander I. Giehl T. Ziegler V. M. Ghete G.p. Murtas G. Mannocchi B. Fabbro O. Callot M.-n. Minard C. Curtil Alan Litke Mario Maggi Emmerich Kneringer G. Leibenguth H. Przysiezniak H. Przysiezniak A. Rosowsky I. Videau Roger Forty J. P. Lees C. N. Booth M. A. Mcneil Paul Hodgson J. K. Sedgbeer P. Maley Olivier Deschamps Roberto Tenchini Roberto Tenchini F. Teubert M. Pepe-altarelli B. Pietrzyk J. B. De Vivie De Regie J. Jousset Michael Schmitt T. Medcalf A. Jacholkowska J. Rothberg C. Geweniger C. Geweniger Ting Wang R. Xu Alessia Tricomi S. Bravo H. Videau A. Minten H. Dietl G. Boix D. Schlatter Yuehong Xie R. Beuselinck Christian Zeitnitz Giuseppe Bagliesi David Rousseau H.-a. Nürnberger A. Böhrer F. Badaud S. L. Cartwright Dirk Zerwas V. Ciulli J. J. Veillet L. F. Thompson E. Grauges J.h. Dann Vincent Lemaitre S. Dessagne G. Chazelle A. Ealet P. Colas Franco Ligabue M. Martinez Ramon Miquel L. Duflot Jiali Lin J.c. Thompson J.c. Thompson P. Coyle H. Ruiz G. Maggi Salvatore Nuzzo Y. S. Gao A. S. Thompson F. Machefert Jean-francois Grivaz P. R. Norton J. Kile S. Monteil Paolo Azzurri Günther Dissertori Paolo Spagnolo Werner Wiedenmann L. M. Mir B. Vallage U. Sieler G. Lütjens G. Hughes A.e. Wright M. Kröcker P. Negus J. J. Walsh G. Merino Donato Creanza E. E. Kluge Pierluigi Campana K. Zachariadou Marco Cattaneo D. Decamp John T Harvey J.g. Lynch Junjie Wu P. J. Dornan F. Murtas A.-s. Müller G. Calderini D.p.s. Ferguson Alain Falvard Alessandro Giassi J. A. Strong W. Cameron F. Hölldorfer Giuseppe Raso E. Simopoulou M. Girone X. Huang Paolo Laurelli Olivier Leroy G. Rudolph G. Rizzo F. Ruggieri G. Capon Nancy Marinelli Maria Pilar Casado T.c. Greening Gunter Quast Gunter Quast Eric Lancon C. Markou John-bjarne Hansen Xin Wu I.j. Scott C. Mannert W. Sau Lan E. Thomson Anna Colaleo Lucia Silvestris E. Merle A. Moutoussi A. Ranieri John H. L. Hansen J. H. Von Wimmersperg-toeller J. C. Brient A. Rougé G.a. Blair D. Kuhn Kyle Cranmer Mario Antonelli P. Mato B.s. Nilsson Lorenzo Foà C. Borean S. Xue L.t. Jones C. Guicheney B. Jost Alberto Messineo P. Girtler Y. B. Pan E. Rohne Peter Hansen Peter Hansen G. Prange V. Hepp R. W. L. Jones Maria Smizanska Giovanna Selvaggi O. Schneider O. Schneider P.g. Buck G. Bologna J. Kennedy A.w. Halley W. Männer C. Goy S. Schmeling J. Carr Aristotelis Kyriakis S. Wasserbaech S. Werner G. Faïf Piero Giorgio Verdini B. Michel Gy. Wolf G. A. Cowan P. Perez

subject

Nuclear and High Energy Physics Aleph Particle physics patents FOS: Physical sciences 01 natural sciences 7. Clean energy High Energy Physics - Experiment information Nuclear physics power High Energy Physics - Experiment (hep-ex)constructivism 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physics Nuclear Experiment Physics 010308 nuclear & particles physics communication copyright ethics moral Pair production High Energy Physics::Experiment responsibility Particle Physics - Experiment

description

The production of W-pairs is analysed in a data sample collected by ALEPH at a mean centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 174.2 pb^-1. Cross sections are given for different topologies of W decays into leptons or hadrons. Combining all final states and assuming Standard Model branching fractions, the total W-pair cross section is measured to be 15.71 +- 0.34 (stat) +- 0.18 (syst) pb. Using also the W-pair data samples collected by ALEPH at lower centre-of-mass energies, the decay branching fraction of the W boson into hadrons is measured to be BR (W > hadrons) = 66.97 +- 0.65 (stat) +- 0.32 (syst) %, allowing a determination of the CKM matrix element |V(cs)|= 0.951 +- 0.030 (stat) +- 0.015 (syst).

year	journal	country	edition	language
2000-05-29

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