The generalized parton distribution function (E^u+E^d)(x,xi,t) of the nucleon in the chiral quark soliton model

Details The generalized parton distribution function (E^u+E^d)(x,xi,t) of the nucleon in the chiral quark soliton model The generalized parton distribution function (E^u+E^d)(x,xi,t) of the nucleon in the chiral quark soliton model

2004-11-12

arxiv.org/abs/hep-ph/0411172v2

Phys.Rev.D71:034011,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 12 figures

Scientific paper

10.1103/PhysRevD.71.034011

The unpolarized spin-flip isoscalar generalized parton distribution function (E^u+E^d)(x,xi,t) is studied in the large-Nc limit at a low normalization point in the framework of the chiral quark-soliton model. This is the first study of generalized parton distribution functions in this model, which appear only at the subleading order in the large-Nc limit. Particular emphasis is put therefore on the demonstration of the theoretical consistency of the approach. The forward limit of (E^u+E^d)(x,xi,t) of which only the first moment -- the anomalous isoscalar magnetic moment of the nucleon -- is known phenomenologically, is computed numerically. Observables sensitive to (E^u+E^d)(x,xi,t) are discussed.

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