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https://hdl.handle.net/10316/109482
Título: | Measurement of the low-mass Drell-Yan differential cross section at √s = 7 TeV using the ATLAS detector | Autor: | Santos, S. P. Amor dos Carvalho, J. Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Palavras-chave: | Hadron-Hadron Scattering | Data: | 2014 | Editora: | Springer Nature | Título da revista, periódico, livro ou evento: | Journal of High Energy Physics | Volume: | 2014 | Número: | 6 | Resumo: | The differential cross section for the process Z/γ * → ℓℓ (ℓ = e, μ) as a function of dilepton invariant mass is measured in pp collisions at √s = 7 TeV at the LHC using the ATLAS detector. The measurement is performed in the e and μ channels for invariant masses between 26 GeV and 66 GeV using an integrated luminosity of 1.6 fb -1 collected in 2011 and these measurements are combined. The analysis is extended to invariant masses as low as 12 GeV in the muon channel using 35 pb-1 of data collected in 2010. The cross sections are determined within fiducial acceptance regions and corrections to extrapolate the measurements to the full kinematic range are provided. Next-to-next-to-leading- order QCD predictions provide a significantly better description of the results than next-to-leading-order QCD calculations, unless the latter are matched to a parton shower calculation. | URI: | https://hdl.handle.net/10316/109482 | DOI: | 10.1007/JHEP06(2014)112 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Measurement-of-the-lowmass-DrellYan-differential-cross-section-at-s--7-TeV-using-the-ATLAS-detectorJournal-of-High-Energy-Physics.pdf | 877.79 kB | Adobe PDF | Ver/Abrir |
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