Search for chargino-neutralino production using an emulated recursive jigsaw reconstruction technique in three-lepton final states with the ATLAS detector

TL;DR

This paper presents a search for supersymmetric chargino-neutralino pairs in three-lepton final states using an emulated recursive jigsaw reconstruction technique on ATLAS data, aiming to detect low-mass electroweakinos.

Contribution

It introduces an emulation of the recursive jigsaw reconstruction technique with conventional variables for supersymmetry searches in ATLAS data.

Findings

Validation of the emulated technique.

Study of previous excess with new data.

No significant excess observed.

Abstract

A search for supersymmetry through the pair production of electroweakinos is presented in a three-lepton final state. The analyzed proton-proton collision data taken at a centre-of-mass energy of $\sqrt{s} = 13$ TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of $139$ fb$^{-1}$. The search emulates the recursive jigsaw reconstruction technique using conventional analysis variables, searching for low-mass chargino-neutralino pair production that decays to on-shell $W$ and $Z$ bosons. The technique is validated and the excess seen previously in 2015 and 2016 data is studied while incorporating new data.