2013

Strangeness and charmness content of nucleon from overlap fermions on 2+1-flavor domain-wall fermion configurations

Gong, M., Alexandru, A., Chen, Y. et al.

Understand

We present a calculation of the strangeness and charmness contents <N|\bar{s}s|N> and <N|\bar{c}c|N> of the nucleon from dynamical lattice QCD with 2+1 flavors.

The calculation is performed with overlap valence quarks on 2+1-flavor domain-wall fermion gauge configurations.
The configurations are generated by the RBC collaboration on a 24^3*64 lattice with sea quark mass am_l=0.005, am_s=0.04, and inverse lattice spacing a^{-1}=1.73GeV.
Both actions have chiral symmetry which is essential in avoiding contamination due to the operator mixing with other flavors.

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