# Measurement of fiducial and differential $W^+W^-$ production cross-sections at $\sqrt{s}=$13 TeV with the ATLAS detector

## TL;DR

This paper reports on the measurement of $W^+W^-$ production cross-sections at 13 TeV with the ATLAS detector, including differential distributions and constraints on anomalous gauge couplings, using 36.1 fb$^{-1}$ of data.

## Contribution

It provides the first detailed differential and fiducial cross-section measurements for $W^+W^-$ production at 13 TeV with the ATLAS detector, and sets limits on anomalous gauge couplings.

## Key findings

- Measured fiducial cross-section and differential distributions.
- Compared results with theoretical predictions.
- Set constraints on anomalous electroweak gauge boson interactions.

## Abstract

A measurement of fiducial and differential cross-sections for $W^+W^-$ production in proton-proton collisions at $\sqrt{s}=$13 TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of $36.1$ fb$^{-1}$ is presented. Events with one electron and one muon are selected, corresponding to the decay of the diboson system as $WW\rightarrow e^{\pm}\nu\mu^{\mp}\nu$. To suppress top-quark background, events containing jets with a transverse momentum exceeding 35 GeV are not included in the measurement phase space. The fiducial cross-section, six differential distributions and the cross-section as a function of the jet-veto transverse momentum threshold are measured and compared with several theoretical predictions. Constraints on anomalous electroweak gauge boson self-interactions are also presented in the framework of a dimension-six effective field theory.