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Nucleon and $N^* (1535)$ Distribution Amplitudes
Nucleon Distribution Amplitudes
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2011/1/6
The QCDSF collaboration has investigated the distribution amplitudes and wavefunction normalization constants of the nucleon and its parity partner, the $N^* (1535)$. We report on recent progress in t...
Excited States of the Nucleon in 2+1 Flavor QCD
Excited States the Nucleon
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2011/1/6
Recent developments on the determination of the spin-1/2 spectrum of the nucleon in full QCD are presented. Our focus is on the PACS-CS 2+1 flavor configurations made available through the ILDG. Using...
Strangeness in the nucleon from a mixed action calculation
the nucleon mixed action calculation
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2011/1/7
The contributions of strange quarks to the nucleon mass and the nucleon spin are investigated in a mixed action scheme employing domain wall valence quarks and quark loops on MILC asqtad dynamical fer...
Improved method for calculating nucleon strangeness
Improved method for calculating nucleon strangeness
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2011/1/7
The strange quark content of the nucleon, as well as other matrix elements, can be calculated on the lattice by examining correlations between the nucleon propagator and the quark condensate. The larg...
Nucleon to Delta transition form factors with $N_F=2+1$ domain wall fermions
Nucleon Delta transition
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2011/1/7
We calculate the electromagnetic, axial and pseudo-scalar form factors of the Nucleon to $\Delta(1232)$ transition using two dynamical light degenerate quarks and a dynamical strange quark simulated w...