Khachatryan, V. ; Sirunyan, A. M. ; Tumasyan, A. ; Adam, W. ; Bergauer, T. ; Dragicevic, M. ; Erö, J. ; Fabjan, C. ; Friedl, M. ; Mondal, N. K. ; et., al (2011) Measurements of inclusive W and Z cross sections in pp collisions at √s= 7s TeV Journal of High Energy Physics, 2011 (1). pp. 1-40. ISSN 1126-6708
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Official URL: http://www.springerlink.com/content/80884781g57084...
Related URL: http://dx.doi.org/10.1007/JHEP01(2011)080
Abstract
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→ev) = 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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics. |
| Keywords: | Hadron-Hadron; Scattering |
| ID Code: | 66930 |
| Deposited On: | 27 Oct 2011 11:42 |
| Last Modified: | 27 Oct 2011 11:42 |
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