2020 Impact factor 4.590
Particles and Fields
Eur. Phys. J. C 11, 351-357
DOI 10.1007/s100529900162

Strangeness content and structure function of the nucleon
in a statistical quark model

L.A. Trevisan1 - T. Frederico2 - L. Tomio3

1 Departamento de Matemática e Estatística, Universidade Estadual de Ponta Grossa, 84010-790, Ponta Grossa, PR, Brazil (e-mail: latrevis@uepg.br)
2 Departamento de Física, Instituto Tecnológico de Aeronáutica, CTA, 12228-900, São José dos Campos, SP, Brazil
(e-mail: tobias@fis.ita.cta.br)
3 Instituto de Física Teórica, Universidade Estadual Paulista, 01405-900, São Paulo, SP, Brazil (e-mail: tomio@ift.unesp.br)

Received: 15 March 1999 / Revised version: 15 April 1999 / Published online: 14 October 1999

Abstract
The strangeness content of the nucleon is determined from a statistical model using confined quark levels, and is shown to have a good agreement with the corresponding values extracted from experimental data. The quark levels are generated in a Dirac equation that uses a linear confining potential (scalar plus vector). With the requirement that the result for the Gottfried sum rule violation, given by the New Muon Collaboration (NMC), is well reproduced, we also obtain the difference between the structure functions of the proton and neutron, and the corresponding sea quark contributions.


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