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关于低能粒子物理学的晶格结果综述。

Review of lattice results concerning low-energy particle physics.

作者信息

Aoki S, Aoki Y, Bernard C, Blum T, Colangelo G, Della Morte M, Dürr S, El-Khadra A X, Fukaya H, Horsley R, Jüttner A, Kaneko T, Laiho J, Lellouch L, Leutwyler H, Lubicz V, Lunghi E, Necco S, Onogi T, Pena C, Sachrajda C T, Sharpe S R, Simula S, Sommer R, Van de Water R S, Vladikas A, Wenger U, Wittig H

机构信息

Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawa Oiwakecho, Sakyo-ku, Kyoto, 606-8502 Japan.

Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya, 464-8602 Japan ; RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, NY 11973 USA.

出版信息

Eur Phys J C Part Fields. 2014;74(9):2890. doi: 10.1140/epjc/s10052-014-2890-7. Epub 2014 Sep 17.

DOI:10.1140/epjc/s10052-014-2890-7
PMID:25972762
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4410391/
Abstract

We review lattice results related to pion, kaon, [Formula: see text]- and [Formula: see text]-meson physics with the aim of making them easily accessible to the particle-physics community. More specifically, we report on the determination of the light-quark masses, the form factor [Formula: see text], arising in semileptonic [Formula: see text] transition at zero momentum transfer, as well as the decay-constant ratio [Formula: see text] of decay constants and its consequences for the CKM matrix elements [Formula: see text] and [Formula: see text]. Furthermore, we describe the results obtained on the lattice for some of the low-energy constants of [Formula: see text] and [Formula: see text] Chiral Perturbation Theory and review the determination of the [Formula: see text] parameter of neutral kaon mixing. The inclusion of heavy-quark quantities significantly expands the FLAG scope with respect to the previous review. Therefore, we focus here on [Formula: see text]- and [Formula: see text]-meson decay constants, form factors, and mixing parameters, since these are most relevant for the determination of CKM matrix elements and the global CKM unitarity-triangle fit. In addition we review the status of lattice determinations of the strong coupling constant [Formula: see text].

摘要

我们回顾与π介子、K介子、D介子和B介子物理相关的格点结果，目的是使粒子物理界能够轻松获取这些结果。更具体地说，我们报告轻夸克质量的确定、在零动量转移的半轻子D衰变中出现的形状因子F+(0)，以及衰变常数之比fD/fB及其对CKM矩阵元|Vcb|和|Vub|的影响。此外，我们描述了在格点上获得的关于D和B手征微扰理论的一些低能常数的结果，并回顾中性K介子混合的ε参数的确定。与之前的综述相比，重夸克量的纳入显著扩展了FLAG的范围。因此，我们在此重点关注D和B介子的衰变常数、形状因子和混合参数，因为这些对于CKM矩阵元的确定和CKM幺正性三角形的全局拟合最为相关。此外，我们还回顾了格点确定强耦合常数αs的现状。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a6/4410391/619ddd1d8e56/10052_2014_2890_Fig24_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a6/4410391/e0ebd04ac987/10052_2014_2890_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a6/4410391/858017832f49/10052_2014_2890_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35a6/4410391/856bd29bddbf/10052_2014_2890_Fig14_HTML.jpg
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