Speaker
Description
Due to large statistical fluctuations in low-energy events, different selection criteria are adopted to optimize the event sample. Furthermore, based on the correlation between electromagnetic particles and muon components, we optimize the composition-insensitive energy reconstruction variable $N_{e\mu}$. In this work, we develop a low-energy cosmic-ray energy reconstruction method with weak composition dependence based on the LHAASO-KM2A experiment, and preliminarily determine the reconstruction formula for the 50–500 TeV range under the QGSJETII-04 model. The optimized $N_{e\mu}$ achieves an energy resolution better than 25% and an energy reconstruction bias lower than 10%. In addition, it can reproduce the input Gaisser spectrum, demonstrating the feasibility of the proposed method.
