Proton Decay Rate

descriptionPublicationkeyboard_double_arrow_right Article 16 Feb 1981 English Publisher:American Physical Society (APS)Journal:Physical Review Letters, volume 46, pages 463-467 (issn: 0031-9007,

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Authors: Yukio Tomozawa;

doi: 10.1103/physrevlett.46.463

Proton Decay Rate

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Abstract

The pionic two-body decay amplitude of the proton in the SU(5) grand unified gauge theory is computed by using the soft-pion method in the reference frame of the pion at rest. The normalization condition of the relativistic three-body Bethe-Salpeter wave function of the proton is used in the computation. It is shown that the partial decay rate of the process proton ..-->.. e = ..pi../sup 0/ is (0.86 x 10/sup 30/ yr)/sup -1/ and (1.4 x 10/sup 31/ yr)/sup -1/ for m/sub x/ = 4.0 x 10/sup 14/ GeV and 8.0 x 10/sup 14/ GeV, respectively. These values are on the boundary of the present experimental limit.

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University of Michigan–Flint
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