6533b83afe1ef96bd12a77b8
RESEARCH PRODUCT
Empirical transverse charge densities in the nucleon-to-P11(1440) transition
Lothar TiatorMarc Vanderhaeghensubject
QuarkPhysicsNuclear physicsNuclear and High Energy PhysicsProtonExcited stateNuclear TheoryUp quarkCharge densityCharge (physics)NucleonResonance (particle physics)description
Abstract Using recent experimental data, we analyze the electromagnetic transition from the nucleon to the P 11 ( 1440 ) resonance. From the resulting empirical transition form factors, we map out the quark transverse charge densities which induce the N → P 11 ( 1440 ) transition. It is found that the transition from the proton to its first radially excited state is dominated by up quarks in a central region of around 0.5 fm and by down quarks in an outer band which extends up to about 1 fm.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-03-01 | Physics Letters B |