期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 10, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP10(2020)179
关键词
Chiral Lagrangians; Kaon Physics; Lattice QCD; Precision QED
资金
- DFG [TRR110]
- NSFC [11621131001, CRC 110]
- Alexander von Humboldt Foundation through the Humboldt Research Fellowship
- Chinese Academy of Sciences (CAS) through a President's International Fellowship Initiative (PIFI) [2018DM0034]
- VolkswagenStiftung [93562]
- EU Horizon 2020 research and innovation programme, STRONG-2020 project [824093]
- German-Mexican research collaboration Grant [278017, SP 778/4-1]
- NSFC of China [11775002]
- DOE [DE-SC0010339]
We construct several classes of hadronic matrix elements and relate them to the low-energy constants in Chiral Perturbation Theory that describe the electromagnetic effects in the semileptonic beta decay of the pion and the kaon. We propose to calculate them using lattice QCD, and argue that such a calculation will make an immediate impact to a number of interesting topics at the precision frontier, including the outstanding anomalies in |V-us| and the top-row Cabibbo-Kobayashi-Maskawa matrix unitarity.
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