English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

The $t\bar{t}$ production cross-section is measured in the lepton+jetschannel using proton$-$proton collision data at a centre-of-mass energy of$\sqrt{s}=13$ TeV collected with the ATLAS detector at the LHC. The datasetcorresponds to an integrated luminosity of 139 fb$^{-1}$. Events with exactlyone charged lepton and four or more jets in the final state, with at least onejet containing $b$-hadrons, are used to determine the $t\bar{t}$ productioncross-section through a profile-likelihood fit. The inclusive cross-section ismeasured to be ${\sigma_{\text{inc}} = 830 \pm 0.4~ \text{(stat.)}\pm36~\text{(syst.)}\pm 14~\text{(lumi.)}~\mathrm{pb}}$ with a relativeuncertainty of 4.6 %. The result is consistent with theoretical calculations atnext-to-next-to-leading order in perturbative QCD. The fiducial $t\bar{t}$cross-section within the experimental acceptance is also measured.

Measurement of the $t\bar{t}$ production cross-section in the lepton+jets channel at $\sqrt{s}=13\;$TeV with the ATLAS experiment