6533b7d1fe1ef96bd125c079
RESEARCH PRODUCT
Threshold pion photoproduction in a light-cone quark model
Dieter DrechselW. Konensubject
Nuclear physicsPseudoscalarPhysicsNuclear and High Energy PhysicsParticle physicsPionLight coneNuclear TheoryQuark modelNucleonBottom quarkPseudovectorGraphdescription
Abstract The instantaneous and seagull graphs are calculated for pion photoproduction in a relativistic light-cone model of the nucleon. In both pseudoscalar and pseudovector coupling we find the ratios A (−) : A (0) : A (+) = 1: ( −1 2 μ):( −9 5 μ) in the nonrelativistic limit. These results correspond to the sum of seagull and Z -graph in the nonrelativistic quark model. In pseudovector coupling also the numerical results for realistic-model parameters are close to those values.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1991-07-01 | Nuclear Physics A |