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Spin-dependent parton distributions in the nucleon

✍ Scribed by I.C. Cloët; W. Bentz; A.W. Thomas

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
282 KB
Volume
141
Category
Article
ISSN
0920-5632

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✦ Synopsis

Spin-dependent quark light-cone momentum distributions are calculated for a nucleon in the nuclear medium. We utilize a modified NJL model where the nucleon is described as a composite quark-diquark state. Scalar and vector mean fields are incorporated in the nuclear medium and these fields couple to the confined quarks in the nucleon. The effect of these fields on the spin-dependent distributions and consequently the axial charges is investigated. Our results for the "spin-dependent EMC effect" are also discussed.

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