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Polarized Parton Distributiions and Light-Front Dynamics

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arxiv hep-ph/9808201 v2 pith:RY7KCDDL submitted 1998-08-01 hep-ph

classification hep-ph
keywords structurecalculationlight-frontpartonpolarizedanalyzedapproximationcompared
verification ladder T0 review T1 audit T2 compute T3 formal
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We present a consistent calculation of the structure functions within a light-front constituent quark model of the nucleon. Relativistic effects and the relevance of the covariance constraints are analyzed for both polarized and unpolarized parton distributions. Various models, which differ in their gluonic structure at the hadronic scale, are investigated. The results of the full covariant calculation are compared with those of a non-relativistic approximation to show the structure and magnitude of the differences.

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