TY  - JOUR
AU  - Green, J. R.
AU  - Negele, J. W.
AU  - Pochinsky, A. V.
AU  - Syritsyn, S. N.
AU  - Engelhardt, M.
AU  - Krieg, S.
TI  - Nucleon electromagnetic form factors from lattice QCD using a nearly physical pion mass
JO  - Physical review / D
VL  - 90
IS  - 7
SN  - 1550-7998
CY  - [S.l.]
PB  - Soc.
M1  - FZJ-2014-05355
SP  - 074507
PY  - 2014
N1  - arXiv:1404.4029
AB  - We present lattice QCD calculations of nucleon electromagnetic form factors using pion masses mπ=149, 202, and 254 MeV and an action with clover-improved Wilson quarks coupled to smeared gauge fields, as used by the Budapest-Marseille-Wuppertal Collaboration. Particular attention is given to the removal of the effects of excited-state contamination by calculations at three source-sink separations and the use of the summation and generalized pencil-of-function methods. The combination of a calculation at the nearly physical mass mπ=149  MeV in a large spatial volume (mπLs=4.2) and the removal of excited-state effects yields agreement with experiment for the electric and magnetic form factors GE(Q2) and GM(Q2) up to Q2=0.5  GeV2.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000344027700008
DO  - DOI:10.1103/PhysRevD.90.074507
UR  - https://juser.fz-juelich.de/record/171793
ER  -