N to Delta transition form factors with Nf=2+1 domain wall fermions
C. Alexandrou (Univ. of Cyprus & The Cyprus Institute), G. Koutsou, (Univ. of Wuppertal/Forschungszentrum Juelich), J. W. Negele (MIT), A. O'Cais, (The Cyprus Institute), Y. Proestos (The Cyprus Institute), A. Tsapalis (IASA, and Hellenic Naval Academy)
TL;DR
This paper computes nucleon to Delta transition form factors using lattice QCD with domain wall fermions, examining theoretical relations and providing insights into nucleon structure at a specific pion mass.
Contribution
It presents the first calculation of N to Delta transition form factors with dynamical domain wall fermions at this lattice spacing and pion mass.
Findings
Pion pole dominance is confirmed.
Goldberger-Treiman relations are examined.
Form factors are computed at a pion mass of 331 MeV.
Abstract
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 spatial size 2.74 fm and pion mass of 331 MeV. Pion pole dominance and the Goldberger-Treiman relations are examined.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Nuclear physics research studies · Physics of Superconductivity and Magnetism