Ponente
Descripción
Accurate modeling of cosmic ray spectra and atmospheric lepton fluxes is fundamental to interpreting astrophysical neutrino observations, understanding neutrino oscillations, constraining hadronic interaction models, and enabling applications from new physics searches to muon tomography. This talk presents recent advances in modeling atmospheric muon and neutrino fluxes at multi-GeV to TeV energies. I will discuss the data-driven daemonflux model, a muon-calibrated approach designed to quantify theoretical uncertainties, and review early experimental validation suggesting accurate flux descriptions. Central to this framework is the Global Spline Fit (GSF) model of cosmic ray spectra, recently updated in 2025 to incorporate the latest direct measurements since its 2017 inception. I will present the impact of GSF2025 on current lepton flux predictions and outline the development roadmap for the Matrix Cascade Equations (MCEq) computational framework.
