论文标题
低能QCD中手性对称性的三流风序参数
Three-flavour order parameters of chiral symmetry in low-energy QCD
论文作者
论文摘要
基于可用现象学拟合和晶格QCD计算，简要审查了当前自发损坏的手性对称性，夸克冷凝物和伪内衰减常数的知识状态。我们认为，尽管该理论在两种风味案例中已经很好地理解了，但在三燃液中，对QCD真空的特征的了解仍然存在差距。我们对通过对ETA衰减到三个PION的贝叶斯统计分析获得的三氟参数的约束。概述了对锥形散射的子阈值参数的新分析的可能含义。
The current state of knowledge of the order parameters of the spontaneously broken chiral symmetry, the quark condensate and the pseudoscalar decay constant in the chiral limit, is briefly reviewed, based on available phenomenological fits and lattice QCD calculations. We argue that while the theory is pretty well understood in the two-flavour case, there is still a gap in the knowledge of the characteristics of the QCD vacuum in the three-flavour one. Our constraints for the three-flavour parameters obtained by a Bayesian statistical analysis of the decays of eta to three pions are presented. Possible implications of a new analysis of subthreshold parameters of pion-pion scattering is outlined.
