Measurement of W and Z production at √s= 7 TeV with the ATLAS detector
نویسنده
چکیده
In spring 2010, the LHC has delivered its first proton-proton collisions at a centre of mass of 7 TeV. The validation of the detector performance started with the measurement of some Standard Model well known processes. This paper presents the measurement of the W and Z cross section in electron and muon final states, which constitute the first sample of isolated high transverse momentum leptons. Clean signals have been extracted and the cross sections have been measured with 17 nb for the W channel and about 220 nb for the Z channel. All results agree with the theoretical predictions (computed at the Next to Next Leading Order) within the uncertainties equally shared between statistic, systematic and luminosity errors at the level of 10-15%.
منابع مشابه
Measurement of the cross sections for the production of W and Z bosons in association with jets and heavy flavours in pp collisions at √ s = 7 TeV with the ATLAS detector
Measurement of the cross sections for the production of W and Z bosons in association with jets and heavy flavours in pp collisions at √ s = 7 TeV with the ATLAS detector Preliminary measurements are presented of the cross sections for the production of W and Z bosons in association with jets in pp collisions at √ s = 7 TeV. The measurements are based on 35 pb −1 of data collected with the ATLA...
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