| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9845391 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 13 Pages |
Abstract
The angular correlation between the beta electron and antineutrino in nuclear beta decay is characterized by the dimensionless parameter a. The value of a for free neutron decay, when combined with other neutron decay parameters, can be used to determine the weak vector and axial vector coupling constants gV and gA and test the validity and self-consistency of the Electroweak Standard Model. Previous experiments that measured a in neutron decay relied on precise proton spectroscopy and were limited by systematic effects at about the 5% level. We present a new approach to measuring a for which systematic uncertainties promise to be much smaller.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
F.E. Wietfeldt, B.M. Fisher, C. Trull, G.L. Jones, B. Collet, L. Goldin, B.G. Yerozolimsky, R. Wilson, S. Balashov, Yu. Mostovoy, A. Komives, M. Leuschner, J. Byrne, F.B. Bateman, M.S. Dewey, J.S. Nico, A.K. Thompson,