N to Delta electromagnetic transition form factors from Lattice QCD

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dc.creatorAlexandrou, C.
dc.creatorde Forcrand, Ph.
dc.creatorLippert, Th.
dc.creatorNeff, H.
dc.creatorNegele, J. W.
dc.creatorSchilling, K.
dc.creatorSchroers, W.
dc.creatorTsapalis, A.
dc.date2003-07-10
dc.date2004-04-03
dc.date.accessioned2026-07-07T11:30:42Z
dc.date.available2026-07-07T11:30:42Z
dc.descriptionThe magnetic dipole, the electric quadrupole and the Coulomb quadrupole amplitudes for the transition $γN\to Δ$ are evaluated both in quenched lattice QCD at $β=6.0$ and using two dynamical Wilson fermions simulated at $β=5.6$. The dipole transition form factor is accurately determined at several values of momentum transfer. On the lattices studied in this work, the electric quadrupole amplitude is found to be non-zero yielding a negative value for the ratio, $ R_{EM}$, of electric quadrupole to magnetic dipole amplitudes at three values of momentum transfer.
dc.descriptionDiscussion of systematic errors and chiral extrapolation extended; Typos corrected; Version to appear in Phys. Rev. D.; 19 pages including 21 figures
dc.identifierhttps://arxiv.org/abs/hep-lat/0307018
dc.identifierhttp://arxiv.org/abs/hep-lat/0307018
dc.identifierPhys.Rev.D69:114506,2004
dc.identifierdoi:10.1103/PhysRevD.69.114506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197064
dc.subjectHigh Energy Physics - Lattice
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleN to Delta electromagnetic transition form factors from Lattice QCD
dc.typetext

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