Measurement of the tau lepton polarisation at LEP2

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 Education, Science and Culture, GZ 616.364/2- III/2a/98, FNRS–FWO, Flanders Institute to encourage scientific and technological research in the industry (IWT) and Belgian Federal Office for Scientific, Technical and Cultural affairs (OSTC), Belgium; FINEP, CNPq, CAPES, FUJB and FAPERJ, Brazil; Ministry of Education of the Czech Republic, project LC527; Academy of Sciences of the Czech Republic, project AV0Z10100502; Commission of the European Communities (DG XII); Direction des Sciences de la Matière, CEA, France; Bundesministerium für 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, SPUB-M/CERN/PO3/DZ296/2000, SPUB-M/CERN/PO3/DZ297/2000, 2P03B 104 19 and 2P03B 6923(2002–2004); FCT, Fundação para a Ciência e Tecnologia, Portugal; Vedecka grantova agentura MS SR, Slovakia, Nr.95/5195/134; Ministry of Science and Technology of the Republic of Slovenia; CICYT, Spain, AEN99-0950 and AEN99-0761; The Swedish Research Council, Particle Physics and Astronomy Research Council, UK; Department of Energy, USA, DE-FG02-01ER41155; EEC RTN contract HPRN-CT-00292- 2002.