Atmospheric muon suppression for Baikal-GVD cascade analysis

• Main Authors: Aynutdinov, V. M, Allakhverdyan, V. A, Avrorin, A. D, Avrorin, A. V, Bardačová, Z, Belolaptikov, I. A, Bondarev, E. A, Borina, I. V, Budnev, N. M, Chadymov, V. A, Chepurnov, A. S, Dik, V. Y, Domogatsky, G. V, Doroshenko, A. A, Dvornický, R, Dyachok, A. N, Dzhilkibaev, Zh. -A. M, Eckerová, E, Elzhov, T. V, Fajt, L, Fomin, V. N, Gafarov, A. R, Golubkov, K. V, Gorshkov, N. S, Gress, T. I, Kebkal, K. G, Kharuk, I. V, Khramov, E. V, Kolbin, M. M, Koligaev, S. O, Konischev, K. V, Korobchenko, A. V, Koshechkin, A. P, Kozhin, V. A, Kruglov, M. V, Kulepov, V. F, Lemeshev, Y. E, Milenin, M. B, Mirgazov, R. R, Naumov, D. V, Nikolaev, A. S, Petukhov, D. P, Pliskovsky, E. N, Rozanov, M. I, Ryabov, E. V, Safronov, G. B, Seitova, D, Shaybonov, B. A, Shelepov, M. D, Shilkin, S. D, Shirokov, E. V, Šimkovic, F, Sirenko, A. E, Skurikhin, A. V, Solovjev, A. G, Sorokovikov, M. N, Štekl, I, Stromakov, A. P, Suvorova, O. V, Tabolenko, V. A, Ulzutuev, B. B, Yablokova, Y. V, Zaborov, D. N, Zavyalov, S. I, Zvezdov, D. Y
• Format: Journal Article
• Language: English
• Published: 29-09-2023
• Subjects: Physics - Instrumentation and Detectors; Physics - Instrumentation and Methods for Astrophysics
• DOI: 10.48550/arxiv.2309.17117

Baikal-GVD (Gigaton Volume Detector) is a neutrino telescope installed at a
depth of 1366 m in Lake Baikal. The expedition of 2023 brought the number of
optical modules in the array up to 3492 (including experimental strings). These
optical modules detect the Cherenkov radiation from secondary charged particles
coming from the neutrino interactions. Neutrinos produce different kinds of
topologically distinct light signatures. Charged current muon neutrino
interactions create an elongated track in the water. Charged and neutral
current interactions of other neutrino flavors yield hadronic and
electromagnetic cascades. The background in the neutrino cascade channel arises
mainly due to discrete stochastic energy losses produced along atmospheric muon
tracks. In this paper, a developed algorithm for the cascade event selection is
presented.