6533b7d5fe1ef96bd1263b3f
RESEARCH PRODUCT
Strange Electromagnetic Form Factors of the Nucleon with Nf=2+1 O(a) -Improved Wilson Fermions
Jonas WilhelmHartmut WittigDalibor DjukanovicKonstantin Ottnadsubject
PhysicsParticle physicsHigh Energy Physics::LatticeComputationExtrapolationGeneral Physics and AstronomyFermion01 natural sciencesPionLattice (order)0103 physical sciences010306 general physicsNucleonNuclear theorydescription
We present results for the strange contribution to the electromagnetic form factors of the nucleon computed on the coordinated lattice simulation ensembles with N_{f}=2+1 flavors of O(a)-improved Wilson fermions and an O(a)-improved vector current. Several source-sink separations are investigated in order to estimate the excited-state contamination. We calculate the form factors on six ensembles with lattice spacings in the range of a=0.049-0.086 fm and pion masses in the range of m_{π}=200-360 MeV, which allows for a controlled chiral and continuum extrapolation. In the computation of the quark-disconnected contributions, we employ hierarchical probing as a variance-reduction technique.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-11-22 | Physical Review Letters |