Measurement of W±-boson and Z-boson production cross-sections in pp collisions at √s=2.76 TeV with the ATLAS detector
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The production cross-sections for W± and Z bosons are measured using ATLAS data corresponding to an integrated luminosity of 4.0 pb−1 collected at a centre-of-mass energy s√=2.76 TeV. The decay channels W→ℓν and Z→ℓℓ are used, where ℓ can be an electron or a muon. The cross-sections are presented for a fiducial region defined by the detector acceptance and are also extrapolated to the full phase space for the total inclusive production cross-section. The combined (average) total inclusive cross-sections for the electron and muon channels are: σtotW+→ℓν=σtotW−→ℓν=σtotZ→ℓℓ=2312±26 (stat.)±27 (syst.)±72 (lumi.)±30 (extr.) pb,1399±21 (stat.) ±17 (syst.)±43 (lumi.)±21 (extr.) pb,323.4±9.8 (stat.)±5.0 (syst.)±10.0 (lumi.)±5.5(extr.) pb. Measured ratios and asymmetries constructed using these cross-sections are also presented. These observables benefit from full or partial cancellation of many systematic uncertainties that are correlated between the different measurements.
CitationAad G, Abbott B, Abbott DC, Abdinov OBo, Abed Abud A, Abeling K, Abhayasinghe DK, Abidi SH, AbouZeid H, Abraham NL, Bjørke K, Bugge MK, Cameron DG, Catmore JR, Feigl S, Garonne V, Gramstad E, Hellesund S, Morisbak V, Oppen H, Ould-Saada F, Pedersen M, Read AL, Røhne OM, Sandaker H, Vadla KOH, Buanes T, Djuvsland JI, Eigen G, Fomin N, Lee GR, Lipniacka A, Martin dit Latour B, Mæland S, Stugu B, Træet AS, Abramowicz H, Abreu H, Abulaiti Y, Acharya BS, Achkar B, Adachi S, Adam L, Adam-Bourdarios C, Adamczyk L, Adamek L, Adelman J, Adersberger M, Adigüzel A, Adorni S, ATLAS C. Measurement of W±-boson and Z-boson production cross-sections in pp collisions at √s=2.76 TeV with the ATLAS detector. European Physical Journal C. 2019;79:901(11)
Copyright CERN for the benefit of the ATLAS collaboration 2019