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arXiv 0909.2939hep-lathep-phnucl-th
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ρ介子的手征和angular momentum含量

The chiral and angular momentum content of the rho-meson

Leonid Ya. Glozman, C. B. Lang, Markus Limmer

摘要:

可以用规范不变的方式定义和计算介子在产生质量的红外线中的夸克-反夸克福克分量的手征波和分波含量。利用变分法和一组跨手征基的插值函数,在具有两个动力学轻夸克的格点量子色动力学蒙特卡罗模拟中,我们提取了ρ介子的轨道角动量和自旋含量.我们在红外得到了一个简单的3S 1分量作为ρ介子的主要分量,并带有少量的3D 1分波,这与SU(6)味旋对称性一致。

英文摘要:

It is possible to define and calculate in a gauge-invariant manner the chiral as well as the partial wave content of the quark-antiquark Fock component of a meson in the infrared, where mass is generated. Using the variational method and a set of interpolators that span a complete chiral basis we extract in a lattice QCD Monte Carlo simulation with two dynamical light quarks the orbital angular momentum and spin content of the rho-meson. We obtain in the infrared a simple 3S1 component as a leading component of the rho-meson with a small admixture of the 3D1 partial wave, in agreement with the SU(6) flavor-spin symmetry.

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