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arXiv · 1705.07330

Precision analysis of electron energy spectrum and angular distribution of neutron beta decay with polarized neutron and electron

A. N. Ivanov·R. Höllwieser·N. I. Troitskaya·M. Wellenzohn·Ya. A. Berdnikov
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Abstract

We give a precision analysis of the correlation coefficients of the electron-energy spectrum and angular distribution of the beta decay and radiative beta decay of the neutron with polarized neutron and electron to order 10^(-3). The calculation of correlation coefficients is carried out within the Standard model with contributions of order 10^(-3), caused by the weak magnetism and proton recoil, taken to next-to-leading order in the large proton mass expansion, and with radiative corrections of order "alpha/pi ~ 10^(-3", calculated to leading order in the large proton mass expansion. The obtained results can be used for the planning of experiments on the search for contributions of order 10^(-4) of interactions beyond the Standard model.

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A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov. 2021-02-03. Precision analysis of electron energy spectrum and angular distribution of neutron beta decay with polarized neutron and electron. https://doi.org/10.1103/physrevc.95.055502

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