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arXiv · 1701.04613

Precision Theoretical Analysis of Neutron Radiative Beta Decay

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

In the Standard Model of electroweak interactions and in the tree--approximation we calculate the rate and branching ratio of the neutron radiative beta decay with one-real photon emission by taking into account the contributions of the weak magnetism and proton recoil to order 1/m_p of the large proton mass m_p expansion. We find that the obtained contributions of the weak magnetism and proton recoil increase the rate and branching ratio of the neutron radiative beta decay by about 0.70%. This is large compared with the contribution of the weak magnetism and proton recoil of about 0.16% to the rate of the neutron beta decay, calculated in Phys. Rev. D88, 073002 (2013).

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A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov. 2017-01-17. Precision Theoretical Analysis of Neutron Radiative Beta Decay. https://doi.org/10.1103/physrevd.95.033007

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