Seasonal Variation of Muon Flux in Daya Bay Using the Full Data Set

When high-energy cosmic rays enter Earth's atmosphere they interact with atmospheric particles and generate charged mesons that subsequently decay into muons. The likelihood of these mesons decaying closer to Earth's surface rather than undergoing secondary interactions within the atmosphere changes as the atmospheric temperature increases and its density decreases. Many experiments have observed the positive correlation between muon flux and atmospheric temperature that originates as a result of this effect. The Daya Bay Reactor Neutrino experiment consists of three experimental halls, each with a different level of rock overburden, making it an ideal setup to also observe this behavior. In this study we use the experiment's full data set to extract correlation coefficients for each hall by studying the relationship between the muon rate and the effective temperature. We explore several methods for conducting this analysis and evaluate their advantages and limitations. In this talk we will present our latest results and show how they compare to the model prediction as well as to the published results of other experiments.