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-ofmass energy √s = 2.76 TeV. The decay channels W → ν and Z → are used, where 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: σtot W+→ν = 2312 ± 26 (stat.) ± 27 (syst.) ± 72 (lumi.) ± 30 (extr.) pb, σtot W−→ν = 1399 ± 21 (stat.) ± 17 (syst.) ± 43 (lumi.) ± 21 (extr.) pb, σtot Z→ = 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.
Measurement of W±-boson and Z-boson production cross-sections in pp collisions at √s = 2.76 TeV with the ATLAS detector / De Castro , S. ; Fabbri , L. ; Gabrielli , A. ; Rinaldi , L. ; Semprini Cesari , N. ; Sioli , M. ; Villa , M. ; Zoccoli , A. ; Bellagamba , L. ; Boscherini , D. ; Bruni , A. ; Bruni , G. ; D’Amen , G. ; Giacobbe , B. ; Polini , A. ; Sbarra , C. ; Sidoti , A. ; Spighi , R. ; Franchini , M. ; Mengarelli , A. ; Romano , M. ; Valentinetti , S. ; Alberghi , G. L. ; Biondi , S. ; Fabbri , F. ; Lasagni Manghi , F; Massa , L. ; Ucchielli , G. ; Vittori , C. ; Alfonsi , F: ; Cabras , G. ; Cervelli , A. ; Giangiacomi , N. ; Negrini , M. ; ATLAS collaboration. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 79:11(2019), pp. 901.1-901.29. [10.1140/epjc/s10052-019-7399-7]
Measurement of W±-boson and Z-boson production cross-sections in pp collisions at √s = 2.76 TeV with the ATLAS detector
De Castro , S.;Fabbri , L.;Gabrielli , A.;Rinaldi , L.;Semprini Cesari , N.;Sioli , M.;Villa , M.;Zoccoli , A.;Bellagamba , L.;Boscherini , D.;Giacobbe , B.;Polini , A.;Sbarra , C.;Franchini , M.;Mengarelli , A.;Romano , M.;Valentinetti , S.;Biondi , S.;Fabbri , F.;Lasagni Manghi , F;Massa , L.;Ucchielli , G.;Vittori , C.;Cabras , G.;Giangiacomi , N.;
2019
Abstract
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-ofmass energy √s = 2.76 TeV. The decay channels W → ν and Z → are used, where 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: σtot W+→ν = 2312 ± 26 (stat.) ± 27 (syst.) ± 72 (lumi.) ± 30 (extr.) pb, σtot W−→ν = 1399 ± 21 (stat.) ± 17 (syst.) ± 43 (lumi.) ± 21 (extr.) pb, σtot Z→ = 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.| File | Dimensione | Formato | |
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