Title
W pair production cross-section and W branching fractions in e<sup>+</sup>e<sup>-</sup> interactions at 183 GeV
Date Issued
01 January 1999
Access level
open access
Resource Type
journal article
Author(s)
Abreu P.
Adam W.
Adye T.
Adzic P.
Albrecht Z.
Alderweireld T.
Alekseev G.D.
Alemany R.
Allmendinger T.
Allport P.P.
Almehed S.
Amaldi U.
Amapane N.
Amato S.
Anassontzis E.G.
Andersson P.
Andreazza A.
Andringa S.
Antilogus P.
Apel W.D.
Arnoud Y.
Asman B.
Augustin J.E.
Augustinus A.
Baillon P.
Bambade P.
Barao F.
Barbiellini G.
Barbier R.
Bardin D.Y.
Barker G.
Baroncelli A.
Battaglia M.
Baubillier M.
Becks K.H.
Begalli M.
Behrmann A.
Beilliere P.
Belokopytov Y.
Belous K.
Benekos N.C.
Benvenuti A.C.
Berat C.
Berggren M.
Bertini D.
Bertrand D.
Besancon M.
Bianchi F.
Bigi M.
Bilenky M.S.
Bizouard M.A.
Bloch D.
Blom H.M.
Bonesini M.
Bonivento W.
Boonekamp M.
Booth P.S.L.
Borgland A.W.
Borisov G.
Bosio C.
Botner O.
Boudinov E.
Bouquet B.
Bourdarios C.
Bowcock T.J.V.
Boyko I.
Bozovic I.
Bozzo M.
Branchini P.
Brenke T.
Brenner R.A.
Bruckman P.
Brunet J.M.
Bugge L.
Buran T.
Burgsmueller T.
Buschbeck B.
Buschmann P.
Cabrera S.
Caccia M.
Calvi M.
Camporesi T.
Canale V.
Carena F.
Carroll L.
Caso C.
Castillo Gimenez M.V.
Cattai A.
Cavallo F.R.
Chabaud V.
Chapkin M.
Charpentier P.
Chaussard L.
Checchia P.
Chelkov G.A.
Chierici R.
Chliapnikov P.
Chochula P.
Chorowicz V.
Chudoba J.
Publisher(s)
Elsevier B.V.
Abstract
The cross-section for the process e+e-→W+W- has been measured with the data sample collected by DELPHI at an average centre-of-mass energy of 182.65 GeV and corresponding to an integrated luminosity of 53 pb-1. Based on the 770 events selected as WW candidates, the cross-section for the doubly resonant process δ(e+e-→W+W-) = 15.86 ± 0.69 (stat) ± 0.26 (syst)pb has been measured and found to be in good agreement with the Standard Model expectation. The branching fractions of the W decay were also measured. From these a value of the CKM mixing matrix element \Vcs\ = 0.985 ± 0.073 (stat) ± 0.025 (syst) was derived. Our previously published WW cross-section measurements and the derived measurement of mW have been revised and updated with the present cross-section measurement to yield mW = 80.49 ± 0.43(stat) ± 0.09(syst) ± 0.03(LEP)GeV/c2. © 1999 Published by Elsevier Science B.V. All rights reserved.
Start page
310
End page
321
Volume
456
Issue
April 2
Language
English
OCDE Knowledge area
Física nuclear
Scopus EID
2-s2.0-0001365294
Source
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ISSN of the container
03702693
Sponsor(s)
We are greatly indebted to our technical collaborators, to the members of the CERN-SL Division for the excellent performance of the LEP collider, and to the funding agencies for their support in building and operating the DELPHI detector. We acknowledge in particular the support of Austrian Federal Ministry of Science and Traffics, GZ 616.364/2-III/2a/98, FNRS–FWO, Belgium, FINEP, CNPq, CAPES, FUJB and FAPERJ, Brazil, Czech Ministry of Industry and Trade, GA CR 202/96/0450 and GA AVCR A1010521, Danish Natural Research Council, Commission of the European Communities (DG XII), Direction des Sciences de la Matire, CEA, France, Bundesministerium fr Bildung, Wissenschaft, Forschung und Technologie, Germany, General Secretariat for Research and Technology, Greece, National Science Foundation (NWO) and Foundation for Research on Matter (FOM), The Netherlands, Norwegian Research Council, State Committee for Scientific Research, Poland, 2P03B06015, 2P03B03311 and SPUB/P03/178/98, JNICT–Junta Nacional de Investigação Cientı́fica e Tecnolgica, Portugal, Vedecka grantova agentura MS SR, Slovakia, Nr. 95/5195/134, Ministry of Science and Technology of the Republic of Slovenia, CICYT, Spain, AEN96–1661 and AEN96-1681, The Swedish Natural Science Research Council, Particle Physics and Astronomy Research Council, UK, Department of Energy, USA, DE–FG02–94ER40817.
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