Publications [#383284] of Seog Oh

Papers Published

1. Acharya, S; Agarwal, A; Aglieri Rinella, G; Aglietta, L; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, SU; Ahuja, I; Akindinov, A; Akishina, V; Al-Turany, M; Aleksandrov, D; Alessandro, B; Alfanda, HM; Alfaro Molina, R; Ali, B; Alici, A; Alizadehvandchali, N; Alkin, A; Alme, J; Alocco, G; Alt, T; Altamura, AR; Altsybeev, I; Alvarado, JR; Alvarez, COR; Anaam, MN; Andrei, C; Andreou, N; Andronic, A; Andronov, E; Anguelov, V; Antinori, F; Antonioli, P; Apadula, N; Aphecetche, L; Appelshäuser, H; Arata, C; Arcelli, S; Arnaldi, R; Arneiro, JGMCA; Arsene, IC; Arslandok, M; Augustinus, A; Averbeck, R; Averyanov, D; Azmi, MD; Baba, H; Badalà, A; Bae, J; Bae, Y; Baek, YW; Bai, X; Bailhache, R; Bailung, Y; Bala, R; Balbino, A; Baldisseri, A; Balis, B; Banoo, Z; Barbasova, V; Barile, F; Barioglio, L; Barlou, M; Barman, B; Barnaföldi, GG; Barnby, LS; Barreau, E; Barret, V; Barreto, L; Bartels, C; Barth, K; Bartsch, E; Bastid, N; Basu, S; Batigne, G; Battistini, D; Batyunya, B; Bauri, D; Bazo Alba, JL; Bearden, IG; Beattie, C; Becht, P; Behera, D; Belikov, I; Bell Hechavarria, ADC; Bellini, F; Bellwied, R; Belokurova, S; Beltran, LGE; Beltran, YAV; Bencedi, G; Bensaoula, A; Beole, S; Berdnikov, Y; Berdnikova, A; Bergmann, L; Besoiu, MG, Multimuons in cosmic-ray events as seen in ALICE at the LHC, Journal of Cosmology and Astroparticle Physics, vol. 2025 no. 4 (April, 2025) [doi]
   (last updated on 2026/01/22)

   Abstract:
   ALICE is a large experiment at the CERN Large Hadron Collider. Located 52 meters underground, its detectors are suitable to measure muons produced by cosmic-ray interactions in the atmosphere. In this paper, the studies of the cosmic muons registered by ALICE during Run 2 (2015–2018) are described. The analysis is limited to multimuon events defined as events with more than four detected muons (Nµ > 4) and in the zenith angle range 0^◦ < θ < 50^◦. The results are compared with Monte Carlo simulations using three of the main hadronic interaction models describing the air shower development in the atmosphere: QGSJET-II-04, EPOS-LHC, and SIBYLL 2.3d. The interval of the primary cosmic-ray energy involved in the measured muon multiplicity distribution is about 4×10¹⁵ < Eprim < 6×10¹⁶ eV. In this interval none of the three models is able to describe precisely the trend of the composition of cosmic rays as the energy increases. However, QGSJET-II-04 is found to be the only model capable of reproducing reasonably well the muon multiplicity distribution, assuming a heavy composition of the primary cosmic rays over the whole energy range, while SIBYLL 2.3d and EPOS-LHC underpredict the number of muons in a large interval of multiplicity by more than 20% and 30%, respectively. The rate of high muon multiplicity events (Nµ > 100) obtained with QGSJET-II-04 and SIBYLL 2.3d is compatible with the data, while EPOS-LHC produces a significantly lower rate (55% of the measured rate). For both QGSJET-II-04 and SIBYLL 2.3d, the rate is close to the data when the composition is assumed to be dominated by heavy elements, an outcome compatible with the average energy Eprim ∼ 10¹⁷ eV of these events. This result places significant constraints on more exotic production mechanisms.