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Two Pion versus σ-Meson Exchange Potentials

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DOI: 10.4236/jmp.2015.67097    2,756 Downloads   3,126 Views   Citations

ABSTRACT

The two pion exchange potentials are evaluated by carrying out the numerical integrations of three Feynman parameters in the corresponding Feynman diagrams. The two pion exchange potentials give rise to the attractive force which is quite similar to the effective scalar meson with its mass of ms≃4.7mπ and its strength of at T = 0 channel. However, there is a strong isospin dependence of (t1·t2)2 which should be different from the phenomenological σ-meson exchange calculations. Therefore, the medium range attraction of the T = 0 nuclear interaction should be due to the two pion exchange processes, but the T = 1 channel is still an open problem.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Oshima, S. , Fujita, T. , Kanda, N. and Yoshimi, A. (2015) Two Pion versus σ-Meson Exchange Potentials. Journal of Modern Physics, 6, 927-936. doi: 10.4236/jmp.2015.67097.

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