Lattice charge overlap .1. Elastic limit of Pi and Rho mesons

被引：22

作者：

Andersen, W ^{[1
]}

Wilcox, W ^{[1
]}

机构：

[1] BAYLOR UNIV, DEPT PHYS, WACO, TX 76798 USA

来源：

ANNALS OF PHYSICS | 1997年 / 255卷 / 01期

关键词：

D O I：

10.1006/aphy.1996.5648

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using lattice quantum chromodynamics on a 16(3) x 24 lattice at beta=6.0, we examine the elastic limit of charge overlap functions in the quenched approximation for the pion and rho mesons; results are compared to previous direct current insertion calculations. A good signal is seen for the pion, but the electric and magnetic rho meson results are considerably noisier. we find that the pion and rho results are characterized by a monopole mass to rho mass ratio of 0.97(8) and 0.73(10), respectively. Assuming that the functional farms of the electric and magnetic form factors are the same, we also find ti rho meson g-fractor of g=2.25(34), consistent with the nonrelativistic quark model. (C) 1997 Academic Press.

引用

页码：34 / 59

页数：26

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