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interaction; Meson exchanges, inelastic channels, and quasibound state関原 隆泰; 神谷 有輝*; 兵藤 哲雄*
Physical Review C, 98(1), p.015205_1 - 015205_20, 2018/07
被引用回数：22 パーセンタイル：86.47(Physics, Nuclear)Based on a baryon-baryon interaction model with meson exchanges, we investigate the origin of the strong attraction in the 
interaction, which was indicated by recent lattice QCD simulations. The long-range part of the potential is constructed by the conventional mechanisms, the exchanges of the 
meson and of the correlated two mesons in the scalar-isoscalar channel, denoted by "
" in the literature. The short-range part is represented by the contact interaction. With the present model parameters fit to reproduce the scattering length of the HAL QCD result of the nearly physical quark masses, we obtain the quasibound state with its eigenenergy 
MeV.
ダイバリオン系は束縛するか?関原 隆泰; 神谷 有輝*; 兵藤 哲雄*
no journal, ,
最近、数値シミュレーションからハドロン間ポテンシャルを引き出すHAL QCDの手法で、現実よりも重いクォーク質量領域においてスピン・パリティ
の
-波系が束縛すると指摘された。本講演では、どのような機構がダイバリオン系に引力相互作用をもたらすのかを突き止めるため、間相互作用を中間子交換模型に基づいて構築し、背後にある物理を明らかにする。間には、中間子とスカラー・アイソスカラー("")中間子を交換させる。中間子とバリオンとの結合には、フレーバー対称性を基にした有効ラグランジアンを用いる。一方、""中間子交換に関しては、核力にヒントを得た、相関した2中間子の交換を行う。これらの中間子交換による間相互作用が引力かどうか、また引力だった場合にそれが束縛状態を作るほどに強いかどうかを議論する。
interaction; Meson exchanges, inelastic channels, and quasibound state関原 隆泰; 神谷 有輝*; 兵藤 哲雄*
no journal, ,
Based on a baryon-baryon interaction model with meson exchanges, we investigate the origin of the strong attraction in the (
S
) interaction, which was indicated by recent lattice QCD simulations. The long-range part of the potential is constructed by the conventional mechanisms, the exchanges of the meson and of the correlated two mesons in the scalar-isoscalar channel, denoted by "" in the literature. The short-range part is represented by the contact interaction. With the present model parameters fit to reproduce the scattering length of the HAL QCD result of the nearly physical quark masses, we obtain the (S) quasibound state with its eigenenergy 
MeV.
