6533b7d2fe1ef96bd125e288
RESEARCH PRODUCT
Evidence for the flavor singlet axial anomaly related effects in phi meson electromagnetic production at large momentum transfers
N.i. KochelevV.ventosubject
PhysicsNuclear and High Energy PhysicsParticle physicsMesonNuclear TheoryHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyFísicaType (model theory)Phi mesonHigh Energy Physics - ExperimentMomentumPomeronHigh Energy Physics - PhenomenologyHigh Energy Physics::ExperimentSinglet stateAnomaly (physics)Nuclear ExperimentSpin-½description
The gluonic contributions to the conventional PCAC formulas due to flavor singlet axial anomaly have been instrumental in explaining the mass of the $\eta^{\prime}$ and providing a plausible explanation for solving the spin crisis. We show that they also play an important role in the description of photo- and electroproduction of vector mesons at low energy and high momentum transfers. We calculate the contributions of this type to $\phi$ meson electromagnetic production in a model, which contains also a soft pomeron, and find agreement with recent CLAS data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-04-06 |