Bound H Dibaryon in Flavor SU(3) Limit of Lattice QCD
Bound H Dibaryon in Flavor SU(3) Limit of Lattice QCD
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DOI：
10.1103/physrevlett.106.162002
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发表时间：
2011-04-20
影响因子：
8.6
通讯作者：
Sasaki, Kenji
中科院分区：
文献类型：
--
作者：
Inoue, Takashi;Ishii, Noriyoshi;Sasaki, Kenji
采用最近开发的晶格 QCD 中重子-重子相互作用的方法研究了奇数为 -2 且重子数为 2 的风味单线 H 双重子。风味单重态中心势源自 Nambu-Bethe-Salpeter 波函数的空间和虚时依赖性，该波函数是在 N(f) = 3 次完整 QCD 模拟中测量的，L 的晶格尺寸类似于或等于 2、3、4 fm。发现该势对体积不敏感，并且对于 673-1015 MeV 的赝标量介子质量，它导致结合能为 30-40 MeV 的 H 双重子。
The flavor-singlet H dibaryon, which has strangeness -2 and baryon number 2, is studied by the approach recently developed for the baryon-baryon interactions in lattice QCD. The flavor-singlet central potential is derived from the spatial and imaginary-time dependence of the Nambu-Bethe-Salpeter wave function measured in N(f) = 3 full QCD simulations with the lattice size of L similar or equal to 2, 3, 4 fm. The potential is found to be insensitive to the volume, and it leads to a bound H dibaryon with the binding energy of 30-40 MeV for the pseudoscalar meson mass of 673-1015 MeV.