Can quark effects be observed in intermediate heavy ion collisions?

Abstract

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.

Meson decay in a correctedP03model

“…The index i in (14) represents the order of the expansion in powers of the wave function Φ. TheM α operator is determined up to a specific order n consistent with (15). The examples studied in [12] required the determination ofM (i) α up to order 3 as shown belowM…”

Meson decay in a corrected $3^P_0$ model

“…The index i in (14) represents the order of the expansion in powers of the wave function Φ. The Mα operator is determined up to a specific order n consistent with (15). The examples studied in [12] required the determination of M (i) α up to order 3 as shown below…”

Low‐energy interaction in the Fock–Tani formalism

“…In this paper, we consider a mapping technique that has been used for a long time in atomic physics (Girardeau ), namely the Fock–Tani formalism, in its adapted formulation to hadron physics (Hadjimichef et al , , ; Silva & Hadjimichef ; Silva et al ) to describe hadron–hadron scattering interactions with constituent interchange.…”