@misc{10481/84912,
year = {2023},
month = {8},
url = {https://hdl.handle.net/10481/84912},
abstract = {A search for a long-lived, heavy neutral lepton (N) in 139  fb−1 of √s=13  TeV pp collision data collected by the ATLAS detector at the Large Hadron Collider is reported. The N is produced via W→Nμ or W→Ne and decays into two charged leptons and a neutrino, forming a displaced vertex. The N mass is used to discriminate between signal and background. No signal is observed, and limits are set on the squared mixing parameters of the N with the left-handed neutrino states for the N mass range 3  GeV<mN<15  GeV. For the first time, limits are given for both single-flavor and multiflavor mixing scenarios motivated by neutrino flavor oscillation results for both the normal and inverted neutrino-mass hierarchies.},
organization = {CERN},
organization = {MICINN, Spain},
organization = {COST},
organization = {ERC},
organization = {ERDF},
organization = {Horizon 2020},
organization = {Marie Skłodowska-Curie Actions},
organization = {European Union},
organization = {La Caixa Banking Foundation},
organization = {Generalitat de Catalunya},
organization = {PROMETEO},
organization = {GenT Programmes Generalitat Valenciana, Spain},
organization = {PIC (Spain)},
publisher = {American Physical Society},
title = {Search for heavy neutral leptons in decays of W bosons using a dilepton displaced vertex in √s = 13 TeV pp collisions with the ATLAS detector},
doi = {10.1103/PhysRevLett.131.061803},
author = {Aad, G. and Aguilar Saavedra, Juan Antonio and Rodríguez Chala, Mikael and Atlas Collaboration},
}