Combined Description of $\bf{\overline{N}N}$ Scattering and Annihilation With A Hadronic Model

Details Combined Description of $\bf{\overline{N}N}$ Scattering and Annihilation With A Hadronic Model Combined Description of $\bf{\overline{N}N}$ Scattering and Annihilation With A Hadronic Model

1994-11-15

arxiv.org/abs/nucl-th/9411014v2

Phys.Rev.C51:2360-2371,1995

Physics

Nuclear Physics

Nuclear Theory

revised version, REVTEX, 9 pages, 10 figures available from this URL ftp://ikp113.ikp.kfa-juelich.de/pub/kph140/nucl-th.941101

Scientific paper

10.1103/PhysRevC.51.2360

A model for the nucleon-antinucleon interaction is presented which is based on meson-baryon dynamics. The elastic part is the $G$-parity transform of the Bonn $NN$ potential. Annihilation into two mesons is described in terms of microscopic baryon-exchange processes including all possible combinations of $\pi,\eta,\rho,\omega,a_0,f_0,a_1,f_1,a_2,f_2,K,K^*$. The remaining annihilation part is taken into account by a phenomenological energy- and state independent optical potential of Gaussian form. The model enables a simultaneous description of nucleon-antinucleon scattering and annihilation phenomena with fair quality.

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