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https://hdl.handle.net/20.500.11851/10884| Title: | Search for Heavy Neutral Leptons in Decays of W Bosons Using a Dilepton Displaced Vertex in Formula Presented Collisions with the ATLAS Detector [2] | Authors: | Filmer, E.K. Jackson, P. Kong, A.X.Y. Potti, H. Ruggeri, T.A. Sharma, A.S. Ting, E.X.L. |
Keywords: | Bosons Germanium alloys Germanium compounds Neutrons Particle detectors Tellurium compounds ATLAS detectors Charged leptons Dileptons Flavor oscillations Large Hadron Collider Large-hadron colliders Lefthanded Mixing parameters Neutrino mass W bosons Mixing |
Publisher: | American Physical Society | 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. © 2023 CERN, for the ATLAS Collaboration. | URI: | https://doi.org/10.1103/PhysRevLett.131.061803 https://hdl.handle.net/20.500.11851/10884 |
ISSN: | 0031-9007 |
| Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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