In:
The European Physical Journal C, Springer Science and Business Media LLC, Vol. 79, No. 11 ( 2019-11)
Abstract:
The production cross-sections for $$W^{\pm }$$ W ± and Z bosons are measured using ATLAS data corresponding to an integrated luminosity of 4.0 pb $$^{-1}$$ - 1 collected at a centre-of-mass energy $$\sqrt{s}=2.76$$ s = 2.76 TeV. The decay channels $$W \rightarrow \ell \nu $$ W → ℓ ν and $$Z \rightarrow \ell \ell $$ Z → ℓ ℓ are used, where $$\ell $$ 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: $$\begin{aligned} \sigma ^{\text {tot}}_{W^{+}\rightarrow \ell \nu }= & {} 2312 \pm 26\ (\text {stat.})\\ & \pm 27\ (\text {syst.}) \pm 72\ (\text {lumi.}) \pm 30\ (\text {extr.})~\text {pb} , \\ \sigma ^{\text {tot}}_{W^{-}\rightarrow \ell \nu }= & {} 1399 \pm 21\ (\text {stat.})\ \pm 17\ (\text {syst.}) \\ & \pm 43\ (\text {lumi.}) \pm 21\ (\text {extr.})~\text {pb} , \\ \sigma ^{\text {tot}}_{Z \rightarrow \ell \ell }= & {} 323.4 \pm 9.8\ (\text {stat.}) \pm 5.0\ (\text {syst.})\\ & \pm 10.0\ (\text {lumi.}) \pm 5.5 (\text {extr.}) ~\text {pb} . \end{aligned}$$ σ W + → ℓ ν tot = 2312 ± 26 ( stat. ) ± 27 ( syst. ) ± 72 ( lumi. ) ± 30 ( extr. ) pb , σ W - → ℓ ν tot = 1399 ± 21 ( stat. ) ± 17 ( syst. ) ± 43 ( lumi. ) ± 21 ( extr. ) pb , σ Z → ℓ ℓ tot = 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.
Type of Medium:
Online Resource
ISSN:
1434-6044
,
1434-6052
DOI:
10.1140/epjc/s10052-019-7399-7
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2019
detail.hit.zdb_id:
1397769-6
detail.hit.zdb_id:
1459069-4
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