New method for calculating electromagnetic effects in semileptonic beta-decays of mesons

被引：25
作者：
Seng, Chien-Yeah [1 ,2 ]
Feng, Xu [3 ,4 ,5 ,6 ]
Gorchtein, Mikhail [7 ,8 ,9 ]
Jin, Lu-Chang [10 ,11 ]
Meissner, Ulf-G. [1 ,2 ,12 ,13 ,14 ]
机构：
[1] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany
[2] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany
[3] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[4] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
[5] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
[6] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[7] Helmholtz Inst Mainz, D-55099 Mainz, Germany
[8] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany
[9] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany
[10] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA
[11] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA
[12] Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys, D-52425 Julich, Germany
[13] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany
[14] Tbilisi State Univ, Tbilisi 0186, Georgia
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2020年 / 2020卷 / 10期
基金：
欧盟地平线“2020”;
关键词：
Chiral Lagrangians; Kaon Physics; Lattice QCD; Precision QED; CHIRAL PERTURBATION-THEORY; RADIATIVE-CORRECTIONS; VIRTUAL PHOTONS; ENERGY; MASS;
D O I：
10.1007/JHEP10(2020)179
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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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页数：27
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