http://arxiv.org/abs/2304.09924
Lateral distribution functions of particles in extensive air showers with the energy $E_0 \simeq 10^{19}$ eV recorded by ground-based and underground scintillation detectors with a threshold of $E_{\mu} \simeq 1.0 \times \sec\theta$ GeV at the Yakutsk array during the continuous observations from 1986 to 2016 have been analyzed using events with zenith angles $\theta \le 60^{\circ}$ functions have been compared to the predictions obtained with the QGSJet01 hadron interaction model by applying the CORSIKA code. The entire dataset indicates that cosmic rays consist predominantly of protons.
A. Glushkov, K. Lebedev and A. Sabourov
Fri, 21 Apr 23
3/60
Comments: 11 pages, 5 figures, 2 tables. Accepted for publication in JETP Letters (v.117, no.4, 2023), minor typos fixed