Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-04-15
Nucl.Phys.A617:414-448,1997; Erratum-ibid.A618:509,1997; Erratum-ibid.A625:896-898,1997
Physics
Nuclear Physics
Nuclear Theory
35 pages, LaTeX, plus 5 figures added as postscript files, ERRATUM: 3 pages, to appear in Nucl. Phys. A added at the end
Scientific paper
10.1016/S0375-9474(97)00016-X
The relativistic field theory model of the deuteron is applied to the calculation of the cross sections of the low-energy radiative neutron-proton capture n + p -> D + gamma and the low-energy two-proton fusion p + p -> D + e^+ + nu_e. For the low-energy radiative neutron-proton capture n + p -> D + gamma our result agrees well with both the experimental data and the potential model prediction. In the case of the two-proton fusion the cross section obtained is 2.9 times as much as that given by the potential approach. The obtained result is discussed in connection with the solar neutrino problem. ERRATUM: We correct the value of the cross section for pp-fusion p + p -> D + e^+ + nu_e. We find a contribution to the astrophysical factor \delta S_pp(0) = 2.01 x 10^{-25} (1 +/- 0.30) MeV b which is obtained only due to weak and strong low-energy interactions of the protons and the deuteron when neglecting the Coulomb repulsion between protons in the intermediate state. Minor misprints are corrected.
Faber Manfried
Ivanov Andrei N.
Oberhummer Heinz
Troitskaya Natalia I.
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