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https://hdl.handle.net/1822/63651| Título: | Measurement of prompt photon production in s<inf>NN</inf>=8.16 TeV p + Pb collisions with ATLAS |
| Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
| Data: | 2019 |
| Editora: | Elsevier 1 |
| Revista: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Citação: | Aaboud, M., Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abeloos, B., . . . Zwalinski, L. (2019). Measurement of prompt photon production in s<inf>NN</inf>=8.16 TeV p + Pb collisions with ATLAS. [Article]. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 796, 230-252. doi: 10.1016/j.physletb.2019.07.031 |
| Resumo(s): | The inclusive production rates of isolated, prompt photons in collisions at TeV are studied with the ATLAS detector at the Large Hadron Collider using a dataset with an integrated luminosity of 165 nb−1 recorded in 2016. The cross-section and nuclear modification factor are measured as a function of photon transverse energy from 20 GeV to 550 GeV and in three nucleon–nucleon centre-of-mass pseudorapidity regions, , , and . The cross-section and values are compared with the results of a next-to-leading-order perturbative QCD calculation, with and without nuclear parton distribution function modifications, and with expectations based on a model of the energy loss of partons prior to the hard scattering. The data disfavour a large amount of energy loss and provide new constraints on the parton densities in nuclei. |
| Tipo: | Artigo |
| URI: | https://hdl.handle.net/1822/63651 |
| DOI: | 10.1016/j.physletb.2019.07.031 |
| ISSN: | 0370-2693 |
| e-ISSN: | 1873-2445 |
| Versão da editora: | https://www.sciencedirect.com/science/article/pii/S0370269319304885 |
| Arbitragem científica: | yes |
| Acesso: | Acesso aberto |
| Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| 1-s2.0-S0370269319304885-main.pdf | 2,3 MB | Adobe PDF | Ver/Abrir |
