Weak capture of protons by protons
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(Published version)
Date
1998
Authors
Schiavilla, R.
Stocks, V. G.
Glockle, W.
Kamada, H.
Nogga, A.
Carlson, J.
Machleidt, R.
Pandharipande, V. R.
Wiringa, R. B.
Kievsky, A.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
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Journal article
Citation
Physical Review C, 1998; 58(2):1263-1277
Statement of Responsibility
Schiavilla, R. ; Stoks, V. ; Glöckle, W. ; Kamada, H. ; Nogga, A. ; Carlson, J. ; Machleidt, R. ; Pandharipande, V. ; Wiringa, R. ; Kievsky, A. ; Rosati, S. ; Viviani, M.
Conference Name
Abstract
The cross section for the proton weak capture reaction 1H(p,e+νe)2H is calculated with wave functions obtained from a number of modern, realistic high-precision interactions. To minimize the uncertainty in the axial two-body current operator, its matrix element has been adjusted to reproduce the measured Gamow-Teller matrix element of tritium β decay in model calculations using trinucleon wave functions from these interactions. A thorough analysis of the ambiguities that this procedure introduces in evaluating the two-body current contribution to the pp capture is given. Its inherent model dependence is in fact found to be very weak. The overlap integral Λ2(E=0) for the pp capture is predicted to be in the range 7.05–7.06, including the axial two-body current contribution, for all interactions considered.
School/Discipline
School of Chemistry and Physics : Physics and Mathematical Physics
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© 1998 The American Physical Society