Showing papers by "E. Pesen published in 2000"

New results from a search for ! and e ! oscillation

Abstract: A first analysis of the complete set of data collected by CHORUS in the years 1994–1997 is presented. The search for ντ charged current events has been performed for both leptonic and hadronic decays of the τ lepton. Noτ candidate has been found. A νμ→ ντ mixing is excluded down to sin 2 2θμτ = 6.8× 10−4 for large1m2 (90% C.L.). 2001 Elsevier Science B.V. All rights reserved. 1 Now at CPPM CNRS-IN2P3, Marseille, France. 2 Supported by the German Bundesministerium für Bildung und Forschung under contract numbers 05 6BU11P and 05 7MS12P. 3 Supported by Regione autonoma della Sardegna, Italy. 4 Institut Interuniversitaire des Sciences Nucléaires. 5 Nationaal Fonds voor Wetenschappelijk Onderzoek. 6 Fonds National de la Recherche Scientifique. 7 Deceased. 8 On leave of absence from St. Kliment Ohridski University of Sofia, Bulgaria. 9 Now at University of Bristol, Bristol, UK. 10 Now at DESY, Hamburg, Germany. 11 Now at Fermi National Accelerator Laboratory, Batavia, IL, USA. 12 Now at Center for Chronological Research, Nagoya University, Nagoya, Japan. 13 Now at Royal Holloway College, University of London, Egham, UK. 14 Now at U.C.L.A., Los Angeles, USA. 15 On leave of absence from University of Naples “Federico II”, Naples, Italy. 16 Now at University of Mainz, Mainz, Germany. 17 Now at Academia Sinica, Taipei, Taiwan. 18 On leave of absence from INFN, Ferrara, Italy. 19 CERN, Geneva, Switzerland. 20 Supported by a grant from Deutsche Forschungs Gemeinschaft. 21 Now at Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Gifu, Japan. 22 Partially supported by the “Fondo Sociale Europeo”. 23 CASPUR, Rome, Italy.