Energy spectra, altitude profiles, and charge ratios of atmospheric muons
Energy spectra, altitude profiles, and charge ratios of atmospheric muons
We present a new measurement of air shower muons made during atmospheric ascent of the High Energy Antimatter Telescope balloon experiment. The muon charge ratio ${\ensuremath{\mu}}^{+}/{\ensuremath{\mu}}^{\ensuremath{-}}$ is presented as a function of atmospheric depth in the momentum interval 0.3--0.9 $\mathrm{GeV}/c.$ The differential ${\ensuremath{\mu}}^{\ensuremath{-}}$ momentum spectra are presented between 0.3 and …