Methods for the suppression of background cascades produced along atmospheric muon tracks in the Baikal-GVD

V. A. Allakhverdyan,A. D. Avrorin,A. V. Avrorin,V. M. Aynutdinov, R. Bannasch,Z. Bardacova,I. A. Belolaptikov, I. V. Borina,V. B. Brudanin,N. M. Budnev, V. Y. Dik,G. V. Domogatsky,A. A. Doroshenko,R. Dvornicky,A. N. Dyachok,Zh. -A. M. Dzhilkibaev, E. Eckerova, T. V. Elzhov,L. Fajt, S. V. Fialkovski,A. R. Gafarov,K. V. Golubkov, N. S. Gorshkov,T. I. Gress, M. S. Katulin,K. G. Kebkal,O. G. Kebkal, E. V. Khramov,M. M. Kolbin, K. V. Konischev, K. A. Kopanski,A. V. Korobchenko,A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, M. K. Kryukov,V. F. Kulepov,Pa. Malecki,Y. M. Malyshkin,M. B. Milenin,R. R. Mirgazov, D. V. Naumov, V. Nazari, W. Noga,D. P. Petukhov,E. N. Pliskovsky,M. I. Rozanov,V. D. Rushay,E. V. Ryabov,G. B. Safronov,B. A. Shaybonov,M. D. Shelepov,F. Simkovic, A. E. Sirenko, A. V. Skurikhin,A. G. Solovjev, M. N. Sorokovikov,I. Stekl, A. P. Stromakov,E. O. Sushenok,O. V. Suvorova,V. A. Tabolenko,B. A. Tarashansky, Y. V. Yablokova,S. A. Yakovlev, D. N. Zaborov

arxiv（2022）

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摘要

The Baikal-GVD (Gigaton Volume Detector) is a km(3) - scale neutrino telescope located in Lake Baikal. Currently (year 2021) the Baikal-GVD is composed of 2304 optical modules divided to 8 independent detection units, called clusters. Specific neutrino interactions can cause Cherenkov light topology, referred to as a cascade. However, cascade-like events originate from discrete stochastic energy losses along muon tracks. These cascades produce the most abundant background in searching for high-energy neutrino cascade events. Several methods have been developed, optimized, and tested to suppress background cascades.

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关键词

atmospheric muon tracks,background cascades,suppression,baikal-gvd

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