Study of High-Altitude Coplanarity Phenomena in Super-High-Energy EAS Cores with a Thick Calorimeter
Mukhamedshin R. Sadykov T. Galkin V. Argynova A. Almenova A. Muratov D. Makhmet K. Zhukov V. Ryabov V. Piscal V. Tautayev Y. Sadykov Z.
September 2025Multidisciplinary Digital Publishing Institute (MDPI)
Particles
2025#8Issue 3
Anumber of phenomena were observed in experiments on the study of cosmic rays at mountain altitudes and in the stratosphere at ultra-high energies; in particular, the coplanarity of the most energetic particles and local subcascades in the so-called families of γ-rays and hadrons in the cores of extensive air showers at E0 ≳ 2·1015 eV (√s ≳ 2 TeV). These effects are not described by theoretical models. To explain this phenomenon, it may be necessary to introduce a new process of generating the most energetic particles in the interactions of hadrons with the nuclei of atmospheric atoms. A new experimental array of cosmic ray detectors, including the ADRON-55 ionization calorimeter, has been created to study processes in EAS cores at ultra-high energies. The possibility of using it to study the coplanarity effect is being considered.
coplanar particle generation (CPG) , coplanarity effect , cosmic rays , extensive air shower (EAS) , FANSY 2.0 model , hadron cascade , ionization-neutron calorimeter , quark–gluon string models (QGSM)
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Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, 117312, Russian Federation
Institute of Physics and Technology, Satbayev University, Almaty, 050013, Kazakhstan
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, 119991, Russian Federation
Faculty of Physics and Technology, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
P.N. Lebedev Physical Institute of the Russian Academy of Sciences (LPI), Moscow, 119991, Russian Federation
Institute for Nuclear Research of the Russian Academy of Sciences
Institute of Physics and Technology
Skobeltsyn Institute of Nuclear Physics
Faculty of Physics and Technology
P.N. Lebedev Physical Institute of the Russian Academy of Sciences (LPI)
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