Open charm and bottom meson-nucleon potentials la the nuclear force

核力による開放チャームおよびボトム中間子・核子ポテンシャル

山口 康宏   ; 安井 繁宏*; 保坂 淳

Yamaguchi, Yasuhiro; Yasui, Shigehiro*; Hosaka, Atsushi

We discuss the interaction of an open heavy meson ( and * for charm or and * for bottom) and a nucleon () by considering the , , , and exchange potentials. We construct a potential model by respecting chiral symmetry for light quarks and spin symmetry for heavy quarks. Model parameters are adjusted by referring the phenomenological nuclear (CD-Bonn) potentials reproducing the low-energy scatterings. We show that the resulting interaction may accommodate and bound states with quantum numbers = 0(1/2), and 1(1/2). We find that, in the present potential model, the exchange potential plays an important role for the isosinglet channel, while the exchange potential does for the isotriplet one.