Butterworth, Jonathan;
(2023)
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.
Physical Review Letters
, 131
(6)
, Article 061803. 10.1103/PhysRevLett.131.061803.
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Abstract
A search for a long-lived, heavy neutral lepton (N) in 139 fb^{−1} of √s = 13 TeV p p collision data collected by the ATLAS detector at the Large Hadron Collider is reported. The N is produced via W → N_{μ} or W → N e 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 < m_{N} < 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.
| Type: | Article |
|---|---|
| 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 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.131.061803 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.131.061803 |
| Language: | English |
| Additional information: | © 2023 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10175843 |
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