期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP01(2011)080
关键词
Hadron-Hadron Scattering
资金
- STFC [ST/I000410/1, ST/I002200/1, ST/F007094/1, ST/G502412/1, ST/G502347/1, ST/F006748/1, ST/I005912/1, ST/I002839/1, PP/E002722/1, ST/H00081X/2, ST/I505572/1, PP/D004519/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/D004284/1, ST/I005912/1, ST/I002839/1, ST/G502347/1, ST/I005912/1 GRIDPP, ST/I505572/1, PP/D004519/1, ST/I000410/1, ST/I002200/1, PP/E002722/1, ST/G502412/1, ST/F007094/1, GRIDPP, ST/F006748/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien [0969704, 0901990] Funding Source: National Science Foundation
- Division Of Physics [0802184] Funding Source: National Science Foundation
Measurements of inclusive W and Z boson production cross sections in pp collisions at root 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 sigma(pp -> WX) x B (W -> lv) = 9.95 +/- 0.07 (stat.) +/- 0.28 (syst.) +/- 1.09 (lumi.) nb and sigma(pp -> ZX) x B (Z -> l(+)l(-)) = 0.931 +/- 0.026 (stat.) +/- 0.023 (syst.) +/- 0.102 (lumi.) nb, where l stands for either e or mu. 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.
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