Shao-Jing Dong

Glueball spectrum and matrix elements on anisotropic lattices

The glueball-to-vacuum matrix elements of local gluonic operators in scalar, tensor, and pseudoscalar channels are investigated numerically on several anisotropic lattices with the spatial lattice spacing ranging from 0.1-0.2 fm. These matrix elements are needed to predict the glueball branching ratios in J/{psi} radiative decays which will help identify the glueball states in experiments. Two types of improved local gluonic operators are constructed for a self-consistent check and the finite-volume effects are studied. We find that lattice spacing dependence of our results is very weak and the continuum limits are reliably extrapolated, as a result of improvement of the lattice gauge action and local operators. We also give updated glueball masses with various quantum numbers.

Study of pentaquarks on the lattice with overlap fermions

We present a quenched lattice QCD calculation of spin-

Flavor-singlet gA from lattice QCD.

1/2

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

five-quark states with

Low-dimensional long-range topological structure in the QCD vacuum☆

uudd\overline{s}

Nucleon strangeness form factors from N(f) = 2+1 clover fermion lattice QCD

quark content for both positive and negative parities. We do not observe any bound pentaquark state in these channels for either

PI NN AND PSEUDOSCALAR FORM FACTORS FROM LATTICE QCD

I=0

Chiral symmetry, quark mass, and scaling of the overlap fermions

or

Lattice study of quark and glue momenta and angular momenta in the nucleon

I=1

Quark orbital angular momentum from lattice QCD

. The states we found are consistent with