Pion and Kaon Distribution Amplitudes from Lattice QCD.

Pion and Kaon Distribution Amplitudes from Lattice QCD.
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晶格 QCD 的 Pion 和 Kaon 分布幅度。

DOI:
10.1103/physrevlett.129.132001
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发表时间:
2022
影响因子:
8.6
通讯作者:
Qi
Qi
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Jun Hua;Mingming Chu;Fangcheng He;Jinmei He;X. Ji;A. Schäfer;Yushan Su;Pengzhong Sun;Wei Wang;Ji Xu;Yi;Feiyu Yao;Jian;Qi

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本文采用大动量有效理论对π介子和K介子光锥分布振幅进行了格点QCD计算。计算在三种晶格间距a ={0.06,0.09,0.12} fm,介子动量P_{z}={1.29,1.72,2.15} GeV,介子质量为π介子质量和K介子质量的情况下进行。结果是非微扰重整化在最近提出的混合计划与自重整化,并可靠地外推到连续介质以及无限的动量极限。我们发现π介子和K介子的DA与渐近形式有很大的偏差,并且K介子DA中有很大的SU(3)味破缺效应。
We present a state-of-the-art lattice QCD calculation of the pion and kaon light-cone distribution amplitudes (DAs) using large-momentum effective theory. The calculation is done at three lattice spacings a≈{0.06,0.09,0.12}  fm and physical pion and kaon masses, with the meson momenta P_{z}={1.29,1.72,2.15}  GeV. The result is nonperturbatively renormalized in a recently proposed hybrid scheme with self-renormalization, and extrapolated reliably to the continuum as well as the infinite momentum limit. We find a significant deviation of the pion and kaon DAs from the asymptotic form, and a large SU(3) flavor breaking effect in the kaon DA.
DOI: 10.1016/j.physletb.2017.08.077
发表时间: 2017-05
期刊: Physics Letters B
影响因子: 4.4
作者:
R. C. G. S. Bali;V. Braun;M. Gockeler;M. Gruber;F. Hutzler;P. Korcyl;B. Lang;A. S. U. Regensburg;T. I. O. F. Research;J. University
通讯作者: R. C. G. S. Bali;V. Braun;M. Gockeler;M. Gruber;F. Hutzler;P. Korcyl;B. Lang;A. S. U. Regensburg;T. I. O. F. Research;J. University
DOI: --
发表时间: 2006
期刊: --
影响因子: --
作者:
Iroon Polytechniou-
通讯作者: Iroon Polytechniou-