Abstract
The current status of experimental results on the beta decay of the free neutron is described. An analysis of these data shows that, within the present-day accuracy, the data are fully consistent with the Standard Model of electroweak interaction. At the same time, there exists the possibility of deviations from the Standard Model at a level of 1%. The possible violations due to the contributions of right-handed (WR) bosons, as well as of leptoquark mechanisms introducing anomalous scalar and tensor terms in the effective weak-interaction Hamiltonian, which include the right-handed neutrinos, are estimated. In the last case, the analysis is performed by an analytic method that makes it possible to take into account, for the first time, the possibility of CP violation.
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