Comment on "Role of heavy meson exchange in near threshold N N --> d pi"

Details Comment on "Role of heavy meson exchange in near threshold N N --> d pi" Comment on "Role of heavy meson exchange in near threshold N N --> d pi"

1995-02-06

arxiv.org/abs/nucl-th/9502015v1

Phys.Rev.C53:526-528,1996

Physics

Nuclear Physics

Nuclear Theory

7 pages, figures by fax or mail from janiskanen@phcu.helsinki.fi

Scientific paper

10.1103/PhysRevC.53.526

In a recent paper by C. J. Horowitz (Phys. Rev. C {\bf 48}, 2920 (1993)) a heavy meson exchange is incorporated into threshold NN --> d pi to enhance the grossly underestimated cross section. However, that calculation uses an unjustified assumption on the initial and final momenta, which causes an overestimate of this effect by a factor of 3--4. I point out that the inclusion of the Delta(1232) isobar increases the cross section significantly even at threshold.

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