Fierz interference

Fierz interference

[′firts ‚int·ə′fir·əns]
(nuclear physics)
Interference between the axial vector and tensor parts of the weak interaction of nucleon and lepton (electron-neutrino) fields in beta decay; measurements of the beta-particle energy spectrum indicate that it vanishes.
References in periodicals archive ?
We are developing an experiment to measure the correlations a, A, and B, and the Fierz interference term b in neutron decay, with a precision of approximately [10.sup.-4].
Measurement of neutron decay parameters--the abBA experiment
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