Weak proton capture reactions on H1 and He3 and tritium β decay

Phys. Rev. C 44, 619 – Published 1 August 1991
J. Carlson, D. O. Riska, R. Schiavilla, and R. B. Wiringa


The cross sections for the weak proton capture reactions p+pd+e++νe and p+3He4He+e++νe have been calculated with realistic wave functions determined by using the Argonne v14 nucleon-nucleon interaction. To minimize the uncertainty in the axial exchange current operator, its matrix element has been adjusted so as to reproduce the measured Gamow-Teller matrix element for β decay of tritium. The exchange current contribution enhances the calculated rate of the pp capture reaction by 1.5% and decreases that of the p 3He reaction by almost a factor of 5.

DOI: http://dx.doi.org/10.1103/PhysRevC.44.619

  • Received 11 January 1991
  • Published in the issue dated August 1991

© 1991 The American Physical Society

Authors & Affiliations

J. Carlson

  • Theory Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

D. O. Riska

  • Department of Physics, University of Helsinki, 00170 Helsinki, Finland

R. Schiavilla and R. B. Wiringa

  • Physics Division, Argonne National Laboratory, Argonne, Illinois 60439

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