# Measurement of $WW/WZ \to \ell \nu q q^{\prime}$ production with the hadronically decaying boson reconstructed as one or two jets in $pp$ collisions at $\sqrt{s}=8$ TeV with ATLAS, and constraints on anomalous gauge couplings

## TL;DR

This study measures $WW/WZ$ production cross-sections in proton-proton collisions at 8 TeV using ATLAS data, reconstructs hadronic decays as jets, and sets limits on anomalous gauge couplings, confirming Standard Model predictions.

## Contribution

It provides the first measurements of $WW/WZ$ production with hadronic decays reconstructed as one or two jets at 8 TeV and constrains anomalous gauge couplings.

## Key findings

- Measured cross-sections consistent with Standard Model.
- Reconstructed hadronic bosons as single or double jets.
- Set 95% confidence limits on anomalous couplings.

## Abstract

This paper presents a study of the production of $WW$ or $WZ$ boson pairs, with one $W$ boson decaying to $e\nu$ or $\mu\nu$ and one $W$ or $Z$ boson decaying hadronically. The analysis uses 20.2 fb$^{-1}$ of $\sqrt{s}=8$ TeV $pp$ collision data, collected by the ATLAS detector at the Large Hadron Collider. Cross-sections for $WW/WZ$ production are measured in high-$p_{T}$ fiducial regions defined close to the experimental event selection. The cross-section is measured for the case where the hadronically decaying boson is reconstructed as two resolved jets, and the case where it is reconstructed as a single jet. The transverse momentum distribution of the hadronically decaying boson is used to search for new physics. Observations are consistent with the Standard Model predictions, and $95\%$ confidence intervals are calculated for parameters describing anomalous triple gauge-boson couplings.