A method for an improved measurement of the electron-antineutrino correlation in free neutron beta decay
Type of Work
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
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 g(V) and g(A) 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. (c) 2005 Elsevier B.V. All rights reserved.
Wietfeldt, F. E.; Fisher, B. M.; Trull, C.; Jones, Gordon L.; Collett, Brian; Goldin, L.; Yerozolimsky, B. G.; Wilson, R.; Balashov, S.; Mostovoy, Y.; Komives, A.; Leuschner, M.; Byrne, J.; Bateman, F. B.; Dewey, M. S.; Nico, J. S.; and Thompson, A. K., "A method for an improved measurement of the electron-antineutrino correlation in free neutron beta decay" (2005). Hamilton Digital Commons.
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