Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/69314
Título: | ATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at s√=13 TeV |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Data: | 2019 |
Editora: | Springer |
Revista: | European Physical Journal C |
Citação: | Aad, G., Abbott, B., Abbott, D.C. et al. ATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at s√=13 TeV. Eur. Phys. J. C 79, 970 (2019). https://doi.org/10.1140/epjc/s10052-019-7450-8 |
Resumo(s): | The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which these algorithms identify jets containing b-hadrons is measured in collision data. The measurement uses a likelihood-based method in a sample highly enriched in tt¯ events. The topology of the t→Wb decays is exploited to simultaneously measure both the jet flavour composition of the sample and the efficiency in a transverse momentum range from 20 to 600 GeV. The efficiency measurement is subsequently compared with that predicted by the simulation. The data used in this measurement, corresponding to a total integrated luminosity of 80.5 fb−1, were collected in proton–proton collisions during the years 2015–2017 at a centre-of-mass energy s√= 13 TeV. By simultaneously extracting both the efficiency and jet flavour composition, this measurement significantly improves the precision compared to previous results, with uncertainties ranging from 1 to 8% depending on the jet transverse momentum. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/69314 |
DOI: | 10.1140/epjc/s10052-019-7450-8 |
ISSN: | 1434-6044 |
e-ISSN: | 1434-6052 |
Versão da editora: | https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-7450-8 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Aad2019_Article_ATLASB-jetIdentificationPerfor.pdf | 2,24 MB | Adobe PDF | Ver/Abrir |