Heavy-light quark systems from the QCD instanton vacuum: Nf =1 light flavor case

被引：0

作者：

Hong, Ki-Hoon ^{[1
]}

Kim, Hyun-Chul ^{[1
,2
]}

Musakhanov, M. M. ^{[3
]}

Rakhimov, N. ^{[4
]}

机构：

[1] Inha Univ, Dept Phys, Incheon 22212, South Korea

[2] Korea Inst Adv Study KIAS, Sch Phys, Seoul 02455, South Korea

[3] Natl Univ Uzbekistan, Inst Theoret Phys, Tashkent 100174, Uzbekistan

[4] Korea Univ, CENuM, Seoul 02841, South Korea

来源：

PHYSICAL REVIEW D | 2024年 / 110卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

GENERALIZED FORM-FACTORS; QUANTUM CHROMODYNAMICS; SYMMETRY-BREAKING; MESONS; DECAY; DENSITY; LATTICE;

D O I：

10.1103/PhysRevD.110.114044

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate heavy-light quark systems within the framework of the QCD instanton vacuum, focusing on the Nf = 1 light flavor case. We derive an effective heavy-light quark interaction from the low-energy QCD partition function and construct a heavy-meson effective Lagrangian. The physical residual mass of heavy mesons, Lambda, is determined by employing compositeness and normalization conditions. We calculate the masses of D and B mesons and their weak decay constants to the leading order and next-to-leading order in the 1/mQ expansion. The current results for fD and fB are in good agreement with recent lattice QCD data and Particle Data Group (PDG) average values.

引用

页数：12