Glueck, M. and Reya, E. and Stratmann, M. and Vogelsang, W. (2001) Models for the polarized parton distributions of the nucleon. PHYSICAL REVIEW D, 63 (9): 094005. ISSN 0556-2821
Full text not available from this repository.Abstract
Polarized deep inelastic scattering (DIS) data are analyzed in leading and next-to-leading order of QCD within the common "standard" scenario of polarized parton distributions with a flavor-symmetric light sea (antiqualk) distribution delta(q) over bar, and a completely SU(3)(f) broken "valence" scenario with totally flavor-asymmetric light sea densities (delta(u) over bar not equal delta(d) over bar not equal delta(s) over bar). The latter flavor-broken light sea distributions are modeled with the help of a Pauli-blocking ansatz at the low radiative or dynamical input scales of mu (2)(LO(NLO)) = 0.26 (0.40) GeV2 which complies with predictions of the chiral quarh;-soliton model and expectations based on the statistical parton model as well as with the corresponding, well established, flavor-broken unpolarized sea ((d) over bar><(<mu>)over bar>). Present semi-inclusive DIS data cannot yet uniquely discriminate between those two flavor-symmetric and flavor-broken polarized light sea scenarios.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DEEP-INELASTIC-SCATTERING; TO-LEADING-ORDER; NEUTRON SPIN STRUCTURE; LIGHT-QUARK SEA; STRUCTURE-FUNCTION G(1)(N); OPPOSITE-SIGN DIMUONS; N-C LIMIT; QCD ANALYSIS; FLAVOR-ASYMMETRY; ANTIQUARK DISTRIBUTIONS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Feb 2022 08:11 |
| Last Modified: | 01 Feb 2022 08:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41479 |
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