Low-lying Λ baryons from the lattice

被引：27
|
作者：
Engel, Georg P. [1 ]
Lang, C. B. [1 ]
Schaefer, Andreas [2 ]
机构：
[1] Graz Univ, FB Theoret Phys, Inst Phys, A-8010 Graz, Austria
[2] Univ Regensburg, Inst Theoret Phys, D-93090 Regensburg, Germany
来源：
PHYSICAL REVIEW D | 2013年 / 87卷 / 03期
关键词：
QUARK-MODEL; CHIRAL DYNAMICS; RESONANCES; OCTET;
D O I：
10.1103/PhysRevD.87.034502
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In a lattice QCD calculation with two light dynamical chirally improved quarks we determine ground state and some excited state masses in all four Lambda baryon channels 1/2(+/-) and 3/2(+/-). We perform an infinite volume extrapolation and confirm the widely discussed Lambda (1405). We also analyze the amount of octet-singlet mixing, which is helpful in comparing states with the quark model. DOI: 10.1103/PhysRevD.87.034502
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页数：6
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