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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1606.01945hep-ph
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$π^0 - η- η'$系统中的轻夸克质量差

Light quark mass differences in the $π^0 - η- η'$ system

A. A. Osipov, B. Hiller, A. H. Blin, J. Moreira

摘要:

考虑了广义3味Nambu-Jona-Lasinio Lagrangian,其中包含与$U_A(1)$ 'tHooft味行列式在大$1/N_c$计数中贡献相同量级的手征对称性破缺相互作用,得到了与唯象值非常一致的$π^0-η-η'$系统的混合角和相关的流夸克质量比.同时,得到了低阶赝标九态态分裂的精确序和大小。

英文摘要:

A generalized 3 flavor Nambu-Jona--Lasinio Lagrangian including the explicit chiral symmetry breaking interactions which contribute at the same order in the large $1/N_c$ counting as the $U_A(1)$ 't Hooft flavor determinant is considered to obtain the mixing angles in the $π^0-η-η'$ system and related current quark mass ratios in close agreement with phenomenological values. At the same time an accurate ordering and magnitude of the splitting of states in the low lying pseudoscalar nonet is obtained.

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。

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