Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/48938
Título: | Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at s =8 TeV with the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
Data: | 2017 |
Editora: | American Physical Society |
Revista: | Physical Review D |
Citação: | Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., . . . Zwalinski, L. (2017). Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at s =8 TeV with the ATLAS detector. [Article]. Physical Review D, 95(11). doi: 10.1103/PhysRevD.95.112005 |
Resumo(s): | A measurement of the production cross section for two isolated photons in proton-proton collisions at a center-of-mass energy of √s=8 TeV is presented. The results are based on an integrated luminosity of 20.2 fb−1 recorded by the ATLAS detector at the Large Hadron Collider. The measurement considers photons with pseudorapidities satisfying |ηγ|<1.37 or 1.56<|ηγ|<2.37 and transverse energies of respectively EγT,1>40 GeV and EγT,2>30 GeV for the two leading photons ordered in transverse energy produced in the interaction. The background due to hadronic jets and electrons is subtracted using data-driven techniques. The fiducial cross sections are corrected for detector effects and measured differentially as a function of six kinematic observables. The measured cross section integrated within the fiducial volume is 16.8±0.8 pb. The data are compared to fixed-order QCD calculations at next-to-leading-order and next-to-next-to-leading-order accuracy as well as next-to-leading-order computations including resummation of initial-state gluon radiation at next-to-next-to-leading logarithm or matched to a parton shower, with relative uncertainties varying from 5% to 20%. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/48938 |
DOI: | 10.1103/PhysRevD.95.112005 |
ISSN: | 2470-0010 |
e-ISSN: | 2470-0029 |
Versão da editora: | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.112005 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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PhysRevD.95.112005.pdf | 928,05 kB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons