Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-09-29
Astropart.Phys.33:140-145,2010
Physics
High Energy Physics
High Energy Physics - Experiment
15 pages, 4 figures, submitted to Astropart. Phys
Scientific paper
10.1016/j.astropartphys.2009.12.
Observed since the 1950's, the seasonal effect on underground muons is a well studied phenomenon. The interaction height of incident cosmic rays changes as the temperature of the atmosphere changes, which affects the production height of mesons (mostly pions and kaons). The decay of these mesons produces muons that can be detected underground. The production of muons is dominated by pion decay, and previous work did not include the effect of kaons. In this work, the methods of Barrett and MACRO are extended to include the effect of kaons. These efforts give rise to a new method to measure the atmospheric K/$\pi$ ratio at energies beyond the reach of current fixed target experiments. These methods were applied to data from the MINOS far detector. A method is developed for making these measurements at other underground detectors, including OPERA, Super-K, IceCube, Baksan and the MINOS near detector.
de Jong J. K.
Goodman M. C.
Grashorn Eric W.
Habig Alec
Marshak Marvin L.
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