| Texto completo | |
| Autor(es): |
Acconcia, R.
;
Chinellato, D. D.
;
Derradi de Souza, R.
;
Takahashi, J.
;
Torrieri, G.
;
Markert, C.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 97, n. 3, p. 7-pg., 2018-02-12. |
| Resumo | |
We present studies that show how multi-parton interaction and color reconnection affect the hadro-chemistry in proton-proton (pp) collisions with special focus on the production of resonances using the PYTHIA8 event generator. We find that color reconnection suppresses the relative production of meson resonances such as rho(0) and K*, providing an alternative explanation for the K*/K decrease observed in proton-proton collisions as a function of multiplicity by the ALICE collaboration. Detailed studies of the underlying mechanism causing meson resonance suppression indicate that color reconnection leads to shorter, less energetic strings whose fragmentation is less likely to produce more massive hadrons for a given quark content, therefore reducing ratios such as K*/K and rho(0)/pi in high-multiplicity pp collisions. In addition, we have also studied the effects of allowing string junctions to form and found that these may also contribute to resonance suppression. (AU) | |
| Processo FAPESP: | 16/13803-2 - Produção de estranheza em colisões Pb-Pb na energia de 5.02 TEV no ALICE |
| Beneficiário: | David Dobrigkeit Chinellato |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/05685-2 - Física hadrônica em colisões nucleares de altas energias |
| Beneficiário: | Jun Takahashi |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| Processo FAPESP: | 14/09167-8 - Fenomenologia de hidrodinâmica relativística para aplicação em estudos de colisões de íons pesados no LHC |
| Beneficiário: | Rafael Derradi de Souza |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |