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8 papers · 1 filter
N to Delta transition form factors with Nf=2+1 domain wall fermions
C. Alexandrou, G. Koutsou, J. W. Negele +3
The electromagnetic, axial and pseudoscalar nucleon to Delta form factors are calculated using dynamical domain wall fermions at a lattice spacing of a = 0.114 fm on a lattice of s…
Omega baryon electromagnetic form factors from lattice QCD
C. Alexandrou, T. Korzec, G. Koutsou +1
We present results on the Omega baryon electromagnetic form factors using N_f= 2 + 1 dynamical domain-wall fermion configurations corresponding to a pion mass of about 330 MeV. We…
Nucleon form factors with Nf=2 dynamical twisted mass fermions
C. Alexandrou, T. Korzec, G. Koutsou +6
We present results on the electromagnetic and axial nucleon form factors using two degenerate flavors of twisted mass fermions on lattices of spatial size 2.1 fm and 2.7 fm and a l…
Delta electromagnetic form factors and quark transverse charge densities from lattice QCD
C. Alexandrou, T. Korzec, G. Koutsou +5
We discuss the techniques to extract the electromagnetic Delta form factors in Lattice QCD. We evaluate these form factors using dynamical fermions with smallest pion mass of about…
Low-lying positive-parity excited states of the nucleon
M. S. Mahbub, Alan Ó Cais, Waseem Kamleh +3
We present an overview of the correlation-matrix methods developed recently by the CSSM Lattice Collaboration for the isolation of excited states of the nucleon. Of particular inte…
The low-lying baryon spectrum with two dynamical twisted mass fermions
C. Alexandrou, R. Baron, J. Carbonell +5
The masses of the low lying baryons are evaluated using two degenerate flavors of twisted mass sea quarks corresponding to pseudo scalar masses in the range of about 270-500 MeV. T…