Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/76304
Título: | Two-particle azimuthal correlations in photonuclear ultraperipheral Pb+Pb collisions at 5.02 TeV with ATLAS |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Data: | 2021 |
Editora: | American Physical Society |
Revista: | Physical Review C |
Citação: | Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., . . . Collaboration, A. (2021). Two-particle azimuthal correlations in photonuclear ultraperipheral Pb plus Pb collisions at 5.02 TeV with ATLAS. Physical Review C, 104(1). doi: 10.1103/PhysRevC.104.014903 |
Resumo(s): | Two-particle long-range azimuthal correlations are measured in photonuclear collisions using 1.7nb−1 of 5.02 TeV Pb+Pb collision data collected by the ATLAS experiment at the CERN Large Hadron Collider. Candidate events are selected using a dedicated high-multiplicity photonuclear event trigger, a combination of information from the zero-degree calorimeters and forward calorimeters, and from pseudorapidity gaps constructed using calorimeter energy clusters and charged-particle tracks. Distributions of event properties are compared between data and Monte Carlo simulations of photonuclear processes. Two-particle correlation functions are formed using charged-particle tracks in the selected events, and a template-fitting method is employed to subtract the nonflow contribution to the correlation. Significant nonzero values of the second- and third-order flow coefficients are observed and presented as a function of charged-particle multiplicity and transverse momentum. The results are compared with flow coefficients obtained in proton-proton and proton-lead collisions in similar multiplicity ranges, and with theoretical expectations. The unique initial conditions present in this measurement provide a new way to probe the origin of the collective signatures previously observed only in hadronic collisions. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/76304 |
DOI: | 10.1103/PhysRevC.104.014903 |
ISSN: | 2469-9985 |
e-ISSN: | 2469-9993 |
Versão da editora: | https://journals.aps.org/prc/abstract/10.1103/PhysRevC.104.014903 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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PhysRevC.104.014903.pdf | 3,68 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons