期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP05(2020)001
关键词
Beyond Standard Model; Chiral Lagrangians; Effective Field Theories
资金
- China Postdoctoral Science Foundation [2017M620920]
- NSFC [11835015, 11947302]
- DFG (NSFC) [11621131001]
- DFG [TRR110]
- CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013]
- CAS Center for Excellence in Particle Physics (CCEPP)
- Scientific Research Fund of Hunan Provincial Education Department [19C0772]
- CAS President's International Fellowship Initiative (PIFI) [2018DM0034]
- VolkswagenStiftung [93562]
At low energies, the strong interaction is governed by the Goldstone bosons associated with the spontaneous chiral symmetry breaking, which can be systematically described by chiral perturbation theory. In this paper, we apply this theory to study the theta -vacuum energy density and hence the QCD axion potential up to next-to-leading order with N non-degenerate quark masses. By setting N = 3, we then derive the axion mass, self-coupling, topological susceptibility and the normalized fourth cumulant both analytically and numerically, taking the strong isospin breaking effects into account. In addition, the model-independent part of the axion-photon coupling, which is important for axion search experiments, is also extracted from the chiral Lagrangian supplemented with the anomalous terms up to O mml:mfenced close=) open=(p6mml:mfenced>.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据