%0 Journal Article
%A Green, Jeremy
%A Meinel, Stefan
%A Engelhardt, Michael
%A Krieg, Stefan
%A Laeuchli, Jesse
%A Negele, John
%A Orginos, Kostas
%A Pochinsky, Andrew
%A Syritsyn, Sergey
%T High-precision calculation of the strange nucleon electromagnetic form factors
%J Physical review / D
%V 92
%N 3
%@ 1550-7998
%C [S.l.]
%I Soc.
%M FZJ-2015-05432
%P 031501
%D 2015
%X We report a direct lattice QCD calculation of the strange nucleon electromagnetic form factors $G_E^s$ and $G_M^s$ in the kinematic range 0≤Q²≲1.2GeV². For the first time, both $G_E^s$ and $G_M^s$ are shown to be nonzero with high significance. This work uses closer-to-physical lattice parameters than previous calculations, and achieves an unprecedented statistical precision by implementing a recently proposed variance reduction technique called hierarchical probing. We perform model-independent fits of the form factor shapes using the z-expansion and determine the strange electric and magnetic radii and magnetic moment. We compare our results to parity-violating electron-proton scattering data and to other theoretical studies.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000362218000001
%R 10.1103/PhysRevD.92.031501
%U https://juser.fz-juelich.de/record/203512