Quark-meson coupling model with constituent quarks: Exchange and pionic effects

Bracco, Mirian E.; Krein, G.; Nielsen, M.

doi:10.1142/9789814528917_0021

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2004

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“…The complex in-medium effects can be incorporated into the hadron properties in matter when a more realistic quark model is considered. For nucleons in-medium an initial wave-function is defined and effective quantaties λ ⋆ and m ⋆ q are determined through variational equations [25,26,27]. These effects are beyond the scope of the present calculation.…”

Section: Discussionmentioning

confidence: 99%

Can quark effects be observed in intermediate heavy ion collisions?

Silva¹,

Hadjimichef²

2004

J. Phys. G: Nucl. Part. Phys.

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Abstract. In recent years a tentative description of the short-range part of hadron interactions with constituent quark interchange has been developed providing an alternative approach to meson physics. Quark interchange plays a role, for example, in the nucleon-nucleon (N N ) phase-shifts and cross-section. In heavy ion collision simulations at intermediate energies one of the main features is the N N cross-section in the collisional term, where in most cases it is an input adjusted to the free space value. In this paper we introduce the quark degrees of freedom to the N N cross-section in the Vlasov-Uehling-Uhlenbeck (VUU) model and explore the possibility that these effects appear in the observables at lower energies.

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Section: Discussionmentioning

confidence: 99%