학술논문
Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s = 13 TeV using the ATLAS detector
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article
Author
Aad, G; Abbott, B; Abbott, DC; Abeling, K; Abidi, SH; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Hoffman, AC Abusleme; Acharya, BS; Achkar, B; 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; Ahuja, S; 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; Alkakhi, W; 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; Amelung, C; Ames, CG; Amidei, D; Dos Santos, SP Amor; Amoroso, S; Amos, KR; Amrouche, CS; Ananiev, V; Anastopoulos, C; 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; Aoki, T; Pozo, JA Aparisi; Aparo, MA; Bella, L Aperio; Appelt, C; Aranzabal, N; Ferraz, V Araujo; Arcangeletti, C; Arce, ATH; Arena, E
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Abstract
A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015–2018 at s=13 TeV from pp collisions corresponding to an integrated luminosity of 139 fb−1 are examined. Particles producing anomalously high ionization, consistent with long-lived spin-½ massive particles with electric charges from |q|=2e to |q|=7e are searched for. No statistically significant evidence of such particles is observed, and 95% confidence level cross-section upper limits are calculated and interpreted as the lower mass limits for a Drell–Yan plus photon-fusion production mode. The least stringent limit, 1060 GeV, is obtained for |q|=2e particles, and the most stringent one, 1600 GeV, is for |q|=6e particles.