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The cross section for p + p - d + e(+) + nu(e)The cross section for the fundamental proton-proton fusion process has been reevaluated, employing more accurate parameters such as the deuteron wave function and the weak-interaction coupling constant (from the neutron beta-decay). Small corrections have been computed, such as the effects of vacuum polarization on barrier penetration and the radiative corrections to the process; these two effects almost cancel. The cross section is larger than that computed in previous work. The effect on the expected flux of neutrinos from B-8 decay is a reduction by a factor of 0.92, narrowing the gap between theory and experiment in the solar neutrino problem.
Document ID
19900059067
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gould, Robert J.
(California, University La Jolla, United States)
Guessoum, Nidhal
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
August 20, 1990
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 359
ISSN: 0004-637X
Subject Category
Nuclear And High-Energy Physics
Accession Number
90A46122
Distribution Limits
Public
Copyright
Other

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