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Experimental results on neutrino-electron scattering |
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| Authors: | J Dorenbosch F Udo J V Allaby U Amaldi G Barbiellini M Baubillier F Bergsma A Capone W Flegel F Grancagnolo M Jonker L Lanceri M Metcalf C Nieuwenhuis J Panman R Plunkett C Santoni K Winter I Abt F W Büsser H Daumann P D Gall T Hebbeker F Niebergall P Stähelin P Gorbunov E Grigoriev V Kaftanov V Khovansky A Rosanov A Baroncelli L Barone B Borgia C Bosio M Diemoz U Dore F Ferroni E Longo L Luminari P Monacelli S Morganti F de Notaristefani L Tortora V Valente CHARM Collaboration |
| Institution: | 1. NIKHFF, Amsterdam, The Netherlands 2. CERN, Geneva, Switzerland 8. II. Institut für Experimentalphysik, Universit?t Hamburg, Hamburg, Federal Republic of Germany 10. Institute for Theoretical and Experimental Physics, Moscow, USSR 11. Istituto Nazionale di Fisica Nucleare, Rome, Italy |
| Abstract: | A determination of sin2 θ w based on measurements of elastic scattering of muon-neutrinos and muon-anti-neutrinos on atomic electrons is described. These purely leptonic processes were studied using the CHARM calorimeter exposed to neutrino and antineutrino wide-band beams at the CERN super proton synchrotron. A total of 83±16 neutrino-electron and 112±21 antineutrino-electron events have been detected. From the measurement of the ratio of muon-neutrino and muon-antineutrino cross-sections a value of sin2 θ w =0.211±0.037 was obtained. |
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