Isospin-breaking corrections to light-meson leptonic decays from lattice simulations at physical quark masses
Isospin-breaking corrections to light-meson leptonic decays from lattice simulations at physical quark masses
复制标题
通过物理夸克质量的晶格模拟对轻介子轻子衰变进行同位旋断裂修正
DOI:
10.1007/jhep02(2023)242
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发表时间:
2023
影响因子:
5.4
通讯作者:
Boyle P
中科院分区:
文献类型:
--
作者:
Boyle P
The decreasing uncertainties in theoretical predictions and experimental measurements of several hadronic observables related to weak processes, which in many cases are now smaller than O (1%), require theoretical calculations to include subleading corrections that were neglected so far. Precise determinations of leptonic and semi-leptonic decay rates, including QED and strong isospin-breaking effects, can play a central role in solving the current tensions in the first-row unitarity of the CKM matrix. In this work we present the first RBC/UKQCD lattice calculation of the isospin-breaking corrections to the ratio of leptonic decay rates of kaons and pions into muons and neutrinos. The calculation is performed at fixed lattice spacing (a− 1≃ 1. 730 GeV) on a 48 3× 96 volume with N f= 2+ 1 dynamical quarks close to the physical point and domain wall fermions in the Möbius formulation are employed. Long-distance QED interactions are included according to the QED L prescription and the crucial role of finite-volume electromagnetic corrections in the determination of leptonic decay rates, which produce a large systematic uncertainty, is extensively discussed. Finally, we study the different sources of uncertainty on| V us|/| V ud| and observe that, if finite-volume systematics can be reduced, the error from isospin-breaking corrections is potentially sub-dominant in the final precision of the ratio of the CKM matrix elements.
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DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
E. Scholz;S. Durr
通讯作者:
S. Durr
影响因子:
5
作者:
R. Arthur;T. Blum;T. Blum;P. Boyle;N. Christ;N. Garron;R. Hudspith;T. Izubuchi;C. Jung;C. Kelly;A. Lytle;R. Mawhinney;David Murphy;S. Ohta;S. Ohta;S. Ohta;C. Sachrajda;Amarjit Soni;J. Yu;J. Zanotti
通讯作者:
R. Arthur;T. Blum;T. Blum;P. Boyle;N. Christ;N. Garron;R. Hudspith;T. Izubuchi;C. Jung;C. Kelly;A. Lytle;R. Mawhinney;David Murphy;S. Ohta;S. Ohta;S. Ohta;C. Sachrajda;Amarjit Soni;J. Yu;J. Zanotti
影响因子:
4.4
作者:
Cirigliano, Vincenzo;Crivellin, Andreas;Hoferichter, Martin;Moulson, Matthew
通讯作者:
Moulson, Matthew
影响因子:
5
作者:
D. Giusti;V. Lubicz;C. Tarantino;G. Martinelli;F. Sanfilippo;S. Simula;N. Tantalo
通讯作者:
N. Tantalo
DOI:
10.22323/1.256.0020
发表时间:
2017
期刊:
The European Physical Journal. C, Particles and Fields
影响因子:
--
作者:
A. Patella
通讯作者:
A. Patella