Speaker
Description
Based on experimental data from the Large High Altitude Air Shower Observatory (LHAASO), this study compares the lateral distributions of electromagnetic particles and muons in Extensive Air Showers (EAS) and tests the accuracy of three hadronic- interaction models—QGSJETII-04, EPOS-LHC, and SIBYLL2.3d. The LHAASO-KM2A array, located at 4410 m above sea level, exhibits excellent detection performance for shower particles near the “knee” region, providing high-quality experimental data for this work. This study focuses on high-energy cosmic rays within the energy range of 300 TeV–30 PeV, and uses the combined variable $N_{e\mu}$ = $N_e$ +2.8 $N_{\mu}$ ，which is weakly dependent on the cosmic ray components ，for energy reconstruction . By analyzing the differences between the experimental data and the simulated data from the three hadronic-interaction models, this work provides a reference for the improvement of these models. And it also offers important support for the study of the knee region components, origin and acceleration mechanism of cosmic rays.
