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
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发表时间:
2020
影响因子:
5
通讯作者:
Liu, Yuzhi
中科院分区:
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
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.
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影响因子:
8.6
作者:
Chakraborty B
通讯作者:
Chakraborty B
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
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
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