6533b7dafe1ef96bd126f6a4
RESEARCH PRODUCT
Δ-baryon electromagnetic form factors in lattice QCD
Constantia AlexandrouT. KorzecGiannis KoutsouTheodoros LeontiouC. LorcéJ. W. NegeleV. PascalutsaAntonios TsapalisM. VanderhaeghenConstantia AlexandrouT. KorzecGiannis KoutsouTheodoros LeontiouC. LorcéJ. W. NegeleV. PascalutsaAntonios TsapalisM. Vanderhaeghensubject
QuarkPhysicsQuantum chromodynamicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::LatticeLattice field theoryHigh Energy Physics - Lattice (hep-lat)Nuclear TheoryHigh Energy Physics::PhenomenologyFOS: Physical sciencesLattice QCDDelta baryonBaryonHigh Energy Physics - LatticePionLattice gauge theoryHigh Energy Physics::Experimentdescription
We develop techniques to calculate the four Delta electromagnetic form factors using lattice QCD, with particular emphasis on the sub-dominant electric quadrupole form factor that probes deformation of the Delta. Results are presented for pion masses down to approximately 350 MeV for three cases: quenched QCD, two flavors of dynamical Wilson quarks, and three flavors of quarks described by a mixed action combining domain wall valence quarks and dynamical staggered sea quarks. The magnetic moment of the Delta is chirally extrapolated to the physical point and the Delta charge density distributions are discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-10-22 |