WISArD stands for Weak-interaction studies with 32Ar decay.

This is a new set-up using the former WITCH superconducting magnet which will allow measuring the beta-neutrino angular correlations in the decay of 32Ar. The aim of the experiment is to search for a scalar current contribution in the weak interaction. The energy shift of the beta-delayed protons emitted from the isobaric analogue state of the 32 Ar ground state carries information about this angular correlation. To enhance the sensitivity, protons and positrons from the decay will be measured on either side of a catcher foil in which the radioactive sample is implanted. By conditioning, the protons with a positron detected in the same hemisphere or in the opposite hemisphere of the superconducting magnet the Doppler energy shift will be more or less pronounced as a function of the possible scalar current component of the weak interaction compared to the dominant vector current.

-- DinkoAtanasov - 2020-09-22

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Topic revision: r1 - 2020-09-22 - DinkoAtanasov
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