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“aspect” – a new spectrometer for the measurement of the angular correlation coefficient a in neutron beta decay |
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| Authors: | O. Zimmer, J. Byrne, M. G. D. van der Grinten, W. Heil,F. Glü ck |
| Affiliation: | a Institut Laue-Langevin, B.P. 156, 38042 Grenoble, France b School of Chemistry, Physics and Environmental Sciences, University of Sussex, Falmer, Brighton, BN1 9QH, UK c Institut für Physik, Postfach 3980, 55099 Mainz, Germany d Research Institute for Nuclear and Particle Physics, Theoretical Department, P.O.B. 49, H-1525 Budapest 114, Hungary |
| Abstract: | The combination of the coefficient a of the antineutrino/electron angular correlation with the beta asymmetry of the neutron provides a sensitive test for scalar and tensor contributions to the electroweak Lagrangian, as well as for right-handed currents. A method is given for measuring a with high sensitivity from the proton recoil spectrum. The method is based on a magnetic spectrometer with electrostatic retardation potentials such as used for searches of the neutrino mass in tritium beta decay. The spectrometer can also be used for similar studies using radioactive nuclei. |
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