TY  - CONF
AU  - Green, Jeremy
AU  - Engelhardt, Michael
AU  - Krieg, Stefan
AU  - Meinel, Stefan
AU  - Negele, John
AU  - Pochinsky, Andrew
AU  - Syritsyn, Sergey
TI  - Nucleon form factors with light Wilson quarks
JO  - Proceedings of Science
VL  - LATTICE 2013
SN  - 1824-8039
CY  - Trieste
PB  - SISSA
M1  - FZJ-2013-06623
SP  - 276
PY  - 2013
N1  - arXiv:1310.7043
AB  - We present nucleon observables - primarily isovector vector form factors - from calculations using 2+1 flavors of Wilson quarks. One ensemble is used for a dedicated high-precision study of excited-state effects using five source-sink separations between 0.7 and 1.6 fm. We also present results from a larger set of calculations that include an ensemble with pion mass 149 MeV and box size 5.6 fm, which nearly eliminates the uncertainty associated with extrapolation to the physical pion mass. The results show agreement with experiment for the vector form factors, which occurs only when excited-state contributions are reduced. Finally, we show results from a subset of ensembles that have pion mass 254 MeV with varying temporal and spatial box sizes, which we use for a controlled study of finite-volume effects and a test of the '$m_\pi L=4$' rule of thumb.
T2  - 31st International Symposium on Lattice Field Theory
CY  - 29 Jul 2013 - 3 Aug 2013, Mainz (Germany)
Y2  - 29 Jul 2013 - 3 Aug 2013
M2  - Mainz, Germany
LB  - PUB:(DE-HGF)16 ; PUB:(DE-HGF)8
UR  - https://juser.fz-juelich.de/record/141445
ER  -