2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/129903MINOS is the first large magnetic detector deep underground and is the first to measure the muon charge ratio with high statistics in the region near 1 TeV.\cite{bib:adamson} An approximate formula for the muon charge ratio can be expressed in terms of $ε_π$ = 115 GeV, $ε_K$ = 850 GeV and $\ec$. The implications for K production in the atmosphere will be discussed.Contribution to the 30th International Cosmic Ray Conference, Merida Mexico 2007High Energy Physics - ExperimentAstrophysicstext