Nucleon to delta transition form factors with NF=2+1 domain wall fermions

Citation Alexandrou, C. et al. " Nucleon to Delta Transition Form Factors with NF=2+1 Domain Wall Fermions. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We calculate the electromagnetic, axial, and pseudoscalar form factors of the nucleon to Áð1232Þ transition using two dynamical light degenerate quarks and a dynamical strange quark simulated with the domain wall fermion action. Results are obtained at lattice spacings a ¼ 0:114 fm and a ¼ 0:084 fm, with corresponding pion masses of 330 MeV and 297 MeV, respectively. High statistics measurements are achieved by utilizing the coherent sink technique. The dominant electromagnetic dipole form factor, the axial form factors and the pseudoscalar coupling are extracted to a good accuracy. This allows the investigation of the nondiagonal Goldberger-Treiman relation. Particular emphasis is given on the extraction of the subdominant electromagnetic quadrupole form factors and their ratio to the dominant dipole form factor, R EM and R SM , measured in experiment.