arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0901.0036hep-ph
收藏

重子场关联函数方法:运行强耦合的影响

Baryons in the Field Correlator Method: Effects of the Running Strong Coupling

R. Ya. Kezerashvili, I. M. Narodetskii, A. I. Veselov

摘要:

利用三夸克势类库仑部分的运行强耦合常数,在场关联函数方法的框架下,研究了nnn,nns和ssn重子的基态和P波激发态.在背景微扰理论中,运行耦合被计算为两个回路。用超球函数方法求解了三夸克问题。给出了S波和P波重子的质量。我们的方法重现和改进了以前的结果,得到的冻结值的耦合常数的重子质量。对轨道激发重子禁闭势的弦修正进行了估计,它是旋转弦固有惯性的主要贡献。

英文摘要:

The ground and P-wave excited states of nnn, nns and ssn baryons are studied in the framework of the Field Correlator Method using the running strong coupling constant in the Coulomb-like part of the three-quark potential. The running coupling is calculated up to two loops in the background perturbation theory. The three-quark problem has been solved using the hyperspherical functions method. The masses of the S- and P-wave baryons are presented. Our approach reproduces and improves the previous results for the baryon masses obtained for the freezing value of the coupling constant. The string correction for the confinement potential of the orbitally excited baryons, which is the leading contribution of the proper inertia of the rotating strings, is estimated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑