Physics Goal
The first goal of the experiment is to measure the so-called beta-neutrino correlation. This is indirectly done by measuring the shape of the spectrum of the recoiling ions. This beta-neutrino correlation can provide, if measured precisely, information about fundamental weak interaction properties. According to the Standard Model the weak interaction has a Vector–Axial vector structure. But there are other mathematical possibilities which have not been detected in nature yet. The WITCH experiment will search for scalar currents in the first place. But it is also possible to look for tensor currents.
Other physics goals are the search for heavy neutrinos, measuring Fermi/Gamov-Teller mixing ratios, measuring electron capture probabilities, etc.
Read more about this topic: WITCH Experiment
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—C. John Sommerville (20th century)