| Texto completo | |
| Autor(es): |
Abreu, L. M.
;
Magalhaes, R. O.
;
Higa, R.
;
Navarra, F. S.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 113, n. 1, p. 11-pg., 2026-01-01. |
| Resumo | |
We investigate the interactions of the deuteron with light mesons during the hadronic phase in heavy-ion collisions. We treat the deuteron as a weakly bound state and employ the quasifree approximation to describe the d interaction. The underlying elementary N amplitudes are described by a hybrid effective model, combining the nonresonant background from chiral perturbation theory with resonant contributions via Breit-Wigner parametrizations. These amplitudes are used to calculate the vacuum and thermally averaged cross sections for deuteron dissociation and production, namely, d + -> N + N' + and the corresponding inverse reaction. We then use these cross sections in a rate equation to estimate the time evolution of the deuteron multiplicity. For the initial conditions, we consider two models: the statistical hadronization model and the coalescence model, where the deuteron is treated as a hadronic molecule. Our findings suggest that the final deuteron yield does not retain a memory of its initial production mechanism. (AU) | |
| Processo FAPESP: | 19/07767-1 - Reações nucleares com núcleos fracamente ligados ou com estrutura de cluster, radioativos e estáveis |
| Beneficiário: | Leandro Romero Gasques |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 20/04867-2 - Física e instrumentação de altas energias com o LHC-CERN |
| Beneficiário: | Marcelo Gameiro Munhoz |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| Processo FAPESP: | 17/05660-0 - Estudos teóricos da estrutura e reações de núcleos exóticos e sistemas de muitos corpos |
| Beneficiário: | Brett Vern Carlson |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |