Spin force dependence of the parton distributions: the ratio $F_2^n(x,Q^2)/F_2^p(x,Q^2)$

(2) University of Trento; 3); (3) INFN Trento; (4) University of Pavia; 5) ((1) ECT Trento; (5) INFN Pavia); B. Pasquini (1; M. Traini (2; S. Boffi (4

arxiv: hep-ph/0201017 · v1 · submitted 2002-01-04 · ✦ hep-ph

Spin force dependence of the parton distributions: the ratio F₂^n(x,Q²)/F₂^p(x,Q²)

B. Pasquini (1 , 3) , M. Traini (2 , S. Boffi (4 , 5) ((1) ECT Trento , (2) University of Trento , (3) INFN Trento , (4) University of Pavia

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(5) INFN Pavia)

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classification ✦ hep-ph

keywords hamiltonianmodelsquarkallowsapparentlyapproachbreakingcomparison

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Light-front Hamiltonian dynamics is used to relate low-energy constituent quark models to deep inelastic unpolarized structure functions of the nucleon. The approach incorporates the correct Pauli principle prescription consistently and it allows a transparent investigation of the effects due to the spin-dependent SU(6)-breaking terms in the quark model Hamiltonian. Both Goldstone-boson-exchange interaction and hyperfine-potential models are discussed in a unified scheme and a detailed comparison, between the two(apparently) different potential prescriptions, is presented.

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Spin force dependence of the parton distributions: the ratio F₂^n(x,Q²)/F₂^p(x,Q²)

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