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Prog. Theor. Phys. Vol. 99 No. 6 (1998) pp. 1017-1030

Polarized Quarks, Gluons and Sea in Nucleon Structure Functions

C. Bourrely,^* F. Buccella,^** O. Pisanti,^** P. Santorelli^*,*** and J. Soffer^*

^*Centre de Physique Théorique, CNRS - Luminy, Case 907
  F-13288 Marseille Cedex 9 - France
^**Dipartimento di Scienze Fisiche, Università di Napoli
Mostra d'Oltremare, Pad.19, I-80125, Napoli, Italy
and
INFN, Sezione di Napoli, Napoli, Italy
^***Dipartimento di Fisica, Università di Bari, Via G. Amendola, 173, I-70126 Bari, Italy
and
  INFN, Sezione di Bari, Bari, Italy

(Received May 26, 1997)

Abstract:

We perform a NLO analysis of polarized deep inelastic scattering data to test two different solutions to the so-called spin crisis, one of them based on the axial gluon anomaly and consistent with the Bjorken sum rule, and another in which the defects in the spin sum rules and in the Gottfried sum rule are related. In this case a defect is also expected for the Bjorken sum rule. The first solution is slightly favoured by the SLAC E154 results, but both options seem to be consistent with the CERN SMC data.

URL : http://ptp.ipap.jp/link?PTP/99/1017/
DOI : 10.1143/PTP.99.1017

[ Full Text PDF : FREE ACCESS (581K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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