The NN−1, π and ΔN−1 delta decay modes in the nuclear medium

Spin-Isospin Modes in Heavy-Ion Collisions

“…This implies that the numerical values of the g ′ parameters in this work and ref. [17] are only approximately similar. However, this does not affect how Γ tot ∆ depends on the g ′ parameters, as was discussed in ref.…”

“…The details of this derivation can be found in the literature, for example in refs. [16,17], so in this paper we will only state the final expression in sec. 2.4.…”

“…[17] were the ∆ width in nuclear matter and its contribution from different decay modes was discussed. In that work Λ g = 1.0 GeV was used.…”

“…In order to obtain a consistent description, it is important to calculate simultaneously the dispersion relation, the ∆ width, and the cross sections. As new decay channels for the ∆ are present in the nuclear medium, the ∆ width will differ from its vacuum value [16,17]. However, some of these decay channels correspond in a transport description to ∆-nucleon collisions and should be excluded from the ∆ width in a transport description.…”

“…Although the particular properties considered in those studies may not change much in more refined treatments [12,13,14], other properties can change significantly. More refined models have been used in various contexts, for example the self-consistent coupling of pions and ∆-hole states in nuclear matter [15] and the calculation of the ∆ width in nuclear matter [16,17]. The purpose of the present investigation is to develop and employ such a refined model to derive several in-medium quantities that are useful for transport models, and to discuss their meaning and how they can be implemented consistently in dynamical simulations.…”