6533b7dafe1ef96bd126f4ea

RESEARCH PRODUCT

Strangeness production inp�p annihilation at rest and the quark ? diquark structure of nucleons

Eberhard Klempt

subject

PhysicsQuarkNuclear and High Energy PhysicsParticle physicsAnnihilationMesonHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyNuclear TheoryStrangeness productionSymmetry (physics)Nuclear physicsDiquarkIsospinHigh Energy Physics::ExperimentNuclear ExperimentNucleon

description

The importance of approximate isospin selection rules observed inN¯ N annihilation at rest into two strange mesons is emphasized. The selection rules are traced back to a symmetry between amplitudes describing annihilation by the flux of quarks. Presumably the symmetry reflects the symmetry of ¯qq annihilation vertices. The relation of the symmetry to a quark — diquark substructure of the nucleon is discussed.

https://doi.org/10.1007/bf01313642