학술논문
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
Document Type
article
Author
Aad, G; Abbott, B; Abbott, DC; Abud, A Abed; Abeling, K; Abhayasinghe, DK; Abidi, SH; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Hoffman, AC Abusleme; Acharya, BS; Achkar, B; Adam, L; Bourdarios, C Adam; Adamczyk, L; Adamek, L; Addepalli, SV; Adelman, J; Adiguzel, A; Adorni, S; Adye, T; Affolder, AA; Afik, Y; Agaras, MN; Agarwala, J; Aggarwal, A; Agheorghiesei, C; Aguilar-Saavedra, JA; Ahmad, A; Ahmadov, F; Ahmed, WS; Ai, X; Aielli, G; Aizenberg, I; Akbiyik, M; Åkesson, TPA; Akimov, AV; Al Khoury, K; Alberghi, GL; Albert, J; Albicocco, P; Verzini, MJ Alconada; Alderweireldt, S; Aleksa, M; Aleksandrov, IN; Alexa, C; Alexopoulos, T; Alfonsi, A; Alfonsi, F; Alhroob, M; Ali, B; Ali, S; Aliev, M; Alimonti, G; Allaire, C; Allbrooke, BMM; Allport, PP; Aloisio, A; Alonso, F; Alpigiani, C; Camelia, E Alunno; Estevez, M Alvarez; Alviggi, MG; Coutinho, Y Amaral; Ambler, A; Ambroz, L; Amelung, C; Amidei, D; Dos Santos, SP Amor; Amoroso, S; Amos, KR; Amrouche, CS; Ananiev, V; Anastopoulos, C; Andari, N; Andeen, T; Anders, JK; Andrean, SY; Andreazza, A; Angelidakis, S; Angerami, A; Anisenkov, AV; Annovi, A; Antel, C; Anthony, MT; Antipov, E; Antonelli, M; Antrim, DJA; Anulli, F; Aoki, M; Pozo, JA Aparisi; Aparo, MA; Bella, L Aperio; Appelt, C; Aranzabal, N; Ferraz, V Araujo; Arcangeletti, C; Arce, ATH
Source
Physical Review Letters. 131(6)
Subject
Language
Abstract
A search for a long-lived, heavy neutral lepton (N) in 139 fb^{-1} of sqrt[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