# Recent measurements of associated single top-quark production cross-section with the ATLAS detector

## TL;DR

This paper reports a measurement of the Wt associated production cross-section at 13 TeV using ATLAS data, achieving a significance of 4.5 sigma, consistent with Standard Model predictions.

## Contribution

First measurement of the inclusive Wt cross-section at 13 TeV with ATLAS, providing new experimental data for Standard Model validation.

## Key findings

- Measured cross-section: 94 pb with uncertainties.
- Observed significance: 4.5 sigma.
- Result consistent with Standard Model predictions.

## Abstract

The measurement of the inclusive $Wt$ cross-section at 13 TeV is performed using 3.2$\,\text{fb}{^{-1}}$ of proton--proton collision data collected by the ATLAS detector at the LHC in 2015. Events are required to have at least one jet and two opposite sign leptons. The cross section is measured to be $\sigma_{Wt} = 94\pm 10\text{(stat.)}^{+28}_{-22}\text{(syst.)}\pm 2\text{(lumi})$pb, corresponding to an observed significance of 4.5\,$\sigma$ (3.9\,$\sigma$ expected). The result is consistent with the Standard Model prediction.