Measurements of inclusive W and Z cross sections in pp collisions at √s = 7 TeV The CMS collaboration
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
---|---|
Data(s) |
27/05/2014
27/05/2014
06/10/2011
|
Resumo |
Measurements of inclusive W and Z boson production cross sections in pp collisions at √s = 7 TeV are presented, based on 2.9 pb-1 of data recorded by the CMS detector at the LHC. The measurements, performed in the electron and muon decay channels, are combined to give σ(pp → WX) × B(W → l?) = 9.95 ± 0.07 (stat.) ± 0.28 (syst.) ± 1.09 (lumi.) nb and σ(pp → ZX) × B(Z → l +l-) = 0.931 ± 0.026 (stat.) ± 0.023 (syst.) ± 0.102 (lumi.) nb, where l stands for either e or μ. Theoretical predictions, calculated at the next-to-next-to-leading order in QCD using recent parton distribution functions, are in agreement with the measured cross sections. Ratios of cross sections, which incur an experimental systematic uncertainty of less than 4%, are also reported. |
Identificador |
http://dx.doi.org/10.1007/JHEP01(2011)080 Journal of High Energy Physics, v. 2011, n. 1, 2011. 1126-6708 1029-8479 http://hdl.handle.net/11449/72744 10.1007/JHEP01(2011)080 2-s2.0-80053406440 2-s2.0-80053406440.pdf |
Idioma(s) |
eng |
Relação |
Journal of High Energy Physics |
Direitos |
openAccess |
Palavras-Chave | #Hadron-hadron scattering |
Tipo |
info:eu-repo/semantics/article |