Precision theoretical analysis of neutron radiative beta decay to order O(α2/π2)

Precision theoretical analysis of neutron radiative beta decay to order O(α2/π2) In the Standard Model (SM) we calculate the decay rate of the neutron radiative β- decay to order O(α2/π2∼10-5), where α is the fine-structure constant, and radiative corrections to order O(α/π∼10-3). The obtained results together with the recent analysis of the neutron radiative β- decay to next-to-leading order in the large proton-mass expansion, performed by Ivanov et al. [Phys. Rev. D 95, 033007 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.033007], describe recent experimental data by the RDK II Collaboration [Bales et al., Phys. Rev. Lett. 116, 242501 (2016)PRLTAO0031-900710.1103/PhysRevLett.116.242501] within 1.5 standard deviations. We argue a substantial influence of strong low-energy interactions of hadrons coupled to photons on the properties of the amplitude of the neutron radiative β- decay under gauge transformations of real and virtual photons. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Precision theoretical analysis of neutron radiative beta decay to order O(α2/π2)

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Precision theoretical analysis of neutron radiative beta decay to order O(α2/π2)

Abstract

In the Standard Model (SM) we calculate the decay rate of the neutron radiative β- decay to order O(α2/π2∼10-5), where α is the fine-structure constant, and radiative corrections to order O(α/π∼10-3). The obtained results together with the recent analysis of the neutron radiative β- decay to next-to-leading order in the large proton-mass expansion, performed by Ivanov et al. [Phys. Rev. D 95, 033007 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.033007], describe recent experimental data by the RDK II Collaboration [Bales et al., Phys. Rev. Lett. 116, 242501 (2016)PRLTAO0031-900710.1103/PhysRevLett.116.242501] within 1.5 standard deviations. We argue a substantial influence of strong low-energy interactions of hadrons coupled to photons on the properties of the amplitude of the neutron radiative β- decay under gauge transformations of real and virtual photons.
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Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
1550-7998
eISSN
1550-2368
D.O.I.
10.1103/PhysRevD.95.113006
Publisher site
See Article on Publisher Site

Abstract

In the Standard Model (SM) we calculate the decay rate of the neutron radiative β- decay to order O(α2/π2∼10-5), where α is the fine-structure constant, and radiative corrections to order O(α/π∼10-3). The obtained results together with the recent analysis of the neutron radiative β- decay to next-to-leading order in the large proton-mass expansion, performed by Ivanov et al. [Phys. Rev. D 95, 033007 (2017)PRVDAQ2470-001010.1103/PhysRevD.95.033007], describe recent experimental data by the RDK II Collaboration [Bales et al., Phys. Rev. Lett. 116, 242501 (2016)PRLTAO0031-900710.1103/PhysRevLett.116.242501] within 1.5 standard deviations. We argue a substantial influence of strong low-energy interactions of hadrons coupled to photons on the properties of the amplitude of the neutron radiative β- decay under gauge transformations of real and virtual photons.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jun 1, 2017

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