Quark mass dependence of pseudo-scalar masses and coupling constants

被引：2
|
作者：
Farchioni, F
Gebert, C
Montvay, I
Scholz, E
Scorzato, L
机构：
[1] Univ Munster, Inst Theoret Phys, D-48149 Munster, Germany
[2] DESY, Deutsches Elekt Synchrotron, D-22603 Hamburg, Germany
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2004年 / 129卷
关键词：
D O I：
10.1016/j.nuclphysbps.2003.12.100
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：
The dependence of pseudo-scalar masses and decay constants on the sea and valence quark masses is investigated in the pseudo-Goldstone boson sector of QCD with two light quark flavours. The sea quark masses are at present in the range 1/3m(s) < m(ud) < 2/3m(s) whereas the valence quark masses satisfy 1/2m(sea) less than or equal to m(val) less than or equal to 2m(sea). The values of the Gasser-Leutwyler low energy constants L-4, L-5, L-6 and L-8 are estimated. The computation is done with the Wilson-quark lattice action at gauge coupling beta = 5.1 on 16(4) lattices. O(a) effects are taken into account by applying chiral perturbation theory for the Wilson lattice action as proposed by Rupak and Shoresh.
引用
收藏
页码：179 / 181
页数：3
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