New developments in lattice QCD: Calculation of flavor singlet nucleon matrix elements and hadron scattering lengths

被引：12
|
作者：
Okawa, M
机构：
[1] Natl. Lab. for High Energy Phys., Tsukuba
来源：
NUCLEAR PHYSICS B | 1996年
关键词：
D O I：
10.1016/0920-5632(96)00041-2
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Recent developments in lattice QCD calculation of flavor singlet nucleon matrix elements are reviewed. Substantial sea quark contributions are found in the pi-N sigma term and the quark spin content of the nucleon such that the total magnitude including valence contributions is in reasonable agreement with experiments. Some problems with flavor non-singlet nucleon matrix elements are pointed out. Recent work on lattice QCD calculation of hadron scattering length is also discussed.
引用
收藏
页码：160 / 171
页数：12
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