EXPLORATORY-STUDY OF NUCLEON-NUCLEON-SCATTERING LENGTHS IN LATTICE QCD

被引：43
|
作者：
FUKUGITA, M
KURAMASHI, Y
MINO, H
OKAWA, M
UKAWA, A
机构：
[1] KEK NAT LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN
[2] YAMANASHI UNIV,FAC ENGN,KOFU,YAMANASHI 404,JAPAN
[3] UNIV TSUKUBA,INST PHYS,TSUKUBA,IBARAKI 305,JAPAN
来源：
PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 16期
关键词：
D O I：
10.1103/PhysRevLett.73.2176
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An exploratory study is made of the nucleon-nucleon s-wave scattering lengths in quenched lattice QCD with the Wilson quark action. The pi-N and pi-pi scattering lengths are also calculated for comparison. The calculations are made with heavy quarks corresponding to m(pi)m(p) approximate to 0.73-0.95. The results show that the N-N system has an attractive force in both spin singlet and triplet channels, with their scattering lengths significantly larger than those for the pi-N and pi-pi cases, a trend which is qualitatively consistent with the experiment. Problems toward a more realistic calculation for light quarks are discussed.
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页码：2176 / 2179
页数：4
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