Final results on the neutrino magnetic moment from the MUNU experiment

Abstract

The MUNU detector was designed to study neutrino-electron elastic scattering at low energy. The central component is a Time Projection Chamber filled with CF4 gas, surrounded by an anti-Compton detector. The experiment was carried out at the Bugey (France) nuclear reactor. In this paper we present the final analysis of the data recorded at 3 bar and 1 bar pressure. Both the energy and the scattering angle of the recoil electron are measured. From the 3 bar data a new upper limit on the neutrino magnetic moment was derived. At 1 bar electron tracks down to 150 keV were reconstructed, demonstrating the potentiality of the experimental technique for future applications in low energy neutrino physics.

7 pages, 8 figures; p. 3: changed definition of fidet

References in corpus (5)

• Measurement of the solar neutrino energy spectrum using neutrino-electron scattering
• Neutrino magnetic moments, flavor mixing, and the SuperKamiokande solar data
• New Limits on Neutrino Magnetic Moments from the Kuo-Sheng Reactor Neutrino Experiment
• Limits on the neutrino magnetic moment from the MUNU experiment
• Sub MeV Particles Detection and Identification in the MUNU detector ((1)ISN, IN2P3/CNRS-UJF, Grenoble, France, (2)Institut de Physique, Neuchâtel, Switzerland, (3) INFN, Padova Italy, (4) Physik-Institut, Zürich, Switzerland)

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