| Texto completo | |
| Autor(es): |
Samanta, Rupam
;
Bhatta, Somadutta
;
Jia, Jiangyong
;
Luzum, Matthew
;
Ollitrault, Jean-Yves
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CNR '09: SECOND INTERNATIONAL WORKSHOP ON COMPOUND NUCLEAR REACTIONS AND RELATED TOPICS; v. 296, p. 4-pg., 2024-01-01. |
| Resumo | |
The ATLAS collaboration has recently observed that the variance of the transverse momentum per particle ([ p(t)]), when measured as a function of the collision multiplicity ( N-ch) in Pb+Pb collisions, decreases by a factor 2 for the largest values of Nch, corresponding to ultra-central collisions. We show that this phenomenon is naturally explained by invoking impact parameter (b) fluctuations, which contribute to the variance, and gradually disappear in ultracentral collisions. It implies that N-ch and [ p(t)] are strongly correlated at fixed b, which is explained by the local thermalization of the QGP medium. (AU) | |
| Processo FAPESP: | 21/08465-9 - Dinâmica inicial de colisões nucleares ultrarelativísticas do momento transversal final |
| Beneficiário: | Matthew William Luzum |
| Modalidade de apoio: | Bolsas no Exterior - Pesquisa |
| Processo FAPESP: | 18/24720-6 - Exploração do diagrama de fase da QCD |
| Beneficiário: | Frédérique Marie Brigitte Sylvie Grassi |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 17/05685-2 - Física hadrônica em colisões nucleares de altas energias |
| Beneficiário: | Jun Takahashi |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |