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Roper State from Overlap Fermions
Mingyang Sun, Ying Chen, Gen Wang +11
The Roper state is extracted with valence overlap fermions on a -flavor domain-wall fermion lattice (spacing fm and MeV) using both the Sequential Empi…
Quark spins and Anomalous Ward Identity
Jian Liang, Yi-Bo Yang, Terrence Draper +2
We calculate the intrinsic quark spin contribution to the total proton spin using overlap valence quarks on three ensembles of -flavor RBC/UKQCD domain-wall configurations wit…
Strange and Charm Quark Spins from Anomalous Ward Identity
Ming Gong, Yi-Bo Yang, Jian Liang +3
We present a calculation of the strange and charm quark contributions to the nucleon spin from the anomalous Ward identity (AWI). It is performed with overlap valence quarks on 2+1…
Diquark mass differences from unquenched lattice QCD
Yujiang Bi, Hao Cai, Ying Chen +4
We calculate diquark correlation functions in the Landau gauge on the lattice using overlap valence quarks and 2+1-flavor domain wall fermion configurations. Quark masses are extra…
Quark Spin in Proton from Anomalous Ward Indentity
Yi-Bo Yang, Ming Gong, Keh-Fei Liu +1
We report a quark spin calculation from the anomalous Ward identity with overlap fermions on 2+1 flavor dynamical fermion configurations with light sea quark masses. Such a formula…
Meson Mass Decomposition from Lattice QCD
Yi-Bo Yang, Ying Chen, Terrence Draper +4
Hadron masses can be decomposed as a sum of quark and glue components which are defined through hadronic matrix elements of QCD operators. The components consist of the quark mass…