非定域手征模型中的真空凝聚与π介子波函数
高能物理 - 唯象学
2009-11-07 v2
摘要
我们使用简单的瞬子激发的Nambu Jona-Lasinio型模型来计算扭曲度为3的赝标量π介子光锥波函数。利用该波函数的归一化条件，我们计算了夸克凝聚和胶子凝聚，它们与这些量的唯象值一致。由于我们还可以计算光锥波函数对k_T^2的依赖关系，我们计算了与混合真空凝聚相关的赝标量和轴矢量波函数的k_T^2矩。这使我们能够提取凝聚值并将其与现有的估计进行比较。
引用
@article{arxiv.hep-ph/0111196,
title = {Vacuum condensates and the pion wave functions in the nonlocal chiral model},
author = {M. Praszalowicz and A. Rostworowski},
journal= {arXiv preprint arXiv:hep-ph/0111196},
year = {2009}
}
备注
12 pages, 7 figures; three new paragraphs added: one (in sec. IV) discusses the relation between quark and gluon condensates, the other two (in secs. I and VI) clarify the difference between the normalisation scale Q_0, at which the condensates are evaluated, and the model parameter Lambda; new references added; to be published in Phys. Rev. D