Hadronic-vacuum-polarization contribution to the muon’s anomalous magnetic moment from four-flavor lattice QCD

Hadronic-vacuum-polarization contribution to the muon’s anomalous magnetic moment from four-flavor lattice QCD
复制标题

强子真空极化对四味晶格 QCD 的 μ 子反常磁矩的贡献

DOI:
10.1103/physrevd.101.034512
复制
发表时间:
2020
期刊:
影响因子:
5
通讯作者:
Liu, Yuzhi
Liu, Yuzhi
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Davies, C. T. H.;DeTar, C.;El-Khadra, A. X.;Gámiz, E.;Gottlieb, Steven;Hatton, D.;Kronfeld, A. S.;Laiho, J.;Lepage, G. P.;Liu, Yuzhi

文献摘要

参考文献

被引文献

相似文献

我们从上下夸克的连通图中计算了对μ子异常磁矩的贡献,忽略了电磁学。我们采用了具有动力学、夸克和物理介子质量的QCD规范场组态,分析了晶格间距在0.15 fm到0.15 fm之间的5个系综。在我们的模拟中,上夸克和下夸克质量是相等的。我们得到,在这个世界中,所有的介子都有质量,,与独立的晶格- qcd计算一致。然后,我们将此值与已发表的奇异夸克、迷人夸克和底夸克的连接贡献的晶格- qcd结果结合起来,并估计由于我们的计算不包括强同位旋破断、电磁或夸克断开图的贡献而导致的不确定性。我们对μ子反常磁矩的总强子-真空极化的最终结果为,其中误差分别来自轻夸克和重夸克的贡献。我们的结果与从实验散射数据中得到的现象学计算和初始点阵qcd计算结果一致。它低于强子-真空极化贡献的“无新物理”值,该贡献是通过结合BNL E821测量和其他贡献的理论计算推断出来的。
We calculate the contribution to the muon anomalous magnetic moment hadronic vacuum polarization from the connected diagrams of up and down quarks, omitting electromagnetism. We employ QCD gauge-field configurations with dynamical,,, andquarks and the physical pion mass, and analyze five ensembles with lattice spacings ranging fromto 0.15 fm. The up- and down-quark masses in our simulations have equal masses. We obtain, in this world where all pions have the mass of the,, in agreement with independent lattice-QCD calculations. We then combine this value with published lattice-QCD results for the connected contributions from strange, charm, and bottom quarks, and an estimate of the uncertainty due to the fact that our calculation does not include strong-isospin breaking, electromagnetism, or contributions from quark-disconnected diagrams. Our final result for the totalhadronic-vacuum polarization to the muon’s anomalous magnetic moment is, where the errors are from the light-quark and heavy-quark contributions, respectively. Our result agrees with bothab-initiolattice-QCD calculations and phenomenological determinations from experimental-scattering data. It isbelow the “no new physics” value of the hadronic-vacuum-polarization contribution inferred from combining the BNL E821 measurement ofwith theoretical calculations of the other contributions.
DOI: 10.1103/physrevlett.120.152001
发表时间: 2018
影响因子: 8.6
作者:
Chakraborty B
通讯作者: Chakraborty B
论晶格上的 Maiorana 费米子
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
T.Otobe;et. al.;Jan M. Pawlowski
通讯作者: Jan M. Pawlowski
希格斯玻色子质量测量后对 $(g-2)_mu$ 的电弱贡献
DOI: 10.1103/physrevd.88.053005
发表时间: 2013
期刊: Physical Review D
影响因子: 5
作者:
C. Gnendiger;D. Stöckinger;H. Stöckinger-Kim
通讯作者: H. Stöckinger-Kim
DOI: --
发表时间: 2014
期刊:
影响因子: --
作者:
B. Chakraborty;C. Davies;G. Donald;R. Dowdall;J. Koponen;G. Lepage;T. Teubner
通讯作者: T. Teubner
晶格上 μ 子的强子真空极化和 g-2 的与模型无关的参数化
DOI: --
发表时间: 2012
期刊:
影响因子: --
作者:
C. Aubin;T. Blum;M. Golterman;S. Peris
通讯作者: S. Peris