ISSN:
1572-9540
Keywords:
nuclear β-decay
;
correlations
;
right-handed currents
;
scalar and tensor currents
;
polarized nuclei
;
Penning traps
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Two experiments to search for new physics beyond the standard model for electroweak interactions by measuring correlations between different spin and momentum vectors in nuclear β-decay are discussed. In the first experiment the correlation between the emission asymmetry and the longitudinal polarisation of positrons emitted by polarised nuclei is determined. This type of measurement is sensitive to the presence of right-handed currents but also to possible scalar and tensor-type currents in the weak interaction. The aim of the second experiment is to determine the βν-correlation in β-decay by measuring the energy spectrum of the recoil ions, using a Penning trap and a retardation spectrometer. In this case the focus is on the search for scalar currents in the weak interaction. The results of the experiments presented here are complementary to results from experiments in muon decay and at high-energy colliders.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1012665917625
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