Ratio of a strange quark mass m(s) to up or down quark mass m(u,d) predicted by a quark propagator in the framework of the chiral perturbation theory
文献类型：期刊论文
| 作者 | Peng, JS; Zhou, LJ; Meng, CJ; Pan, JH; Ma, WX; Yuan, TQ;马维兴 |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2013 |
| 卷号 | 37期号:4页码:43101 |
| 关键词 | light quark mass ratio chiral perturbation theory dressed quark propagator non-perturbative QCD |
| 英文摘要 | Based on the fully dressed quark propagator and chiral perturbation theory, we study the ratio of the strange quark mass m(s) to up or down quark mass m(u,d). The ratio is related to the determination of quark masses which are fundamental input parameters of QCD Lagrangian in the Standard Model of particle physics and can not be directly measured since the quark is confined within a hadron. An accurate determination of these QCD free parameters is extremely important for both phenomenological and theoretical applications. We begin with a brief introduction to the non-perturbation QCD theory, and then study the mass ratio in the framework of the chiral perturbation theory (chi PT) with a parameterized fully dressed quark propagator which describes confining fully dressed quark propagation and is analytic everywhere in the finite complex p(2)-plane and has no Lehmann representation so there are no quark production thresholds in any theoretical calculations of observable data. Our prediction for the ratio m(s)/m(u,d) is consistent with other model predictions such as Lattice QCD, instanton model, QCD sum rules and the empirical values used widely in the literature. As a by-product of this study, our theoretical results, together with other predictions of physical quantities that used this quark propagator in our previous publications, clearly show that the parameterized form of the fully dressed quark propagator is an applicable and reliable approximation to the solution of the Dyson-Schwinger Equation of quark propagator in the QCD. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000320597500001 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224758]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | Peng, JS,Zhou, LJ,Meng, CJ,et al. Ratio of a strange quark mass m(s) to up or down quark mass m(u,d) predicted by a quark propagator in the framework of the chiral perturbation theory[J]. CHINESE PHYSICS C,2013,37(4):43101. |
| APA | Peng, JS,Zhou, LJ,Meng, CJ,Pan, JH,Ma, WX,&Yuan, TQ；马维兴.(2013).Ratio of a strange quark mass m(s) to up or down quark mass m(u,d) predicted by a quark propagator in the framework of the chiral perturbation theory.CHINESE PHYSICS C,37(4),43101. |
| MLA | Peng, JS,et al."Ratio of a strange quark mass m(s) to up or down quark mass m(u,d) predicted by a quark propagator in the framework of the chiral perturbation theory".CHINESE PHYSICS C 37.4(2013):43101. |
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来源：高能物理研究所
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