Cosmic-Ray Induced Neutrino Fluxes at the Moon

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

Cosmic-ray induced neutrino backgrounds at the Moon are estimated using a semi-analytic approach. The analytic expressions are derived, flux estimates for electron and muon neutrinos and anti-neutrinos are given, and comparisons with the analogous backgrounds generated in the Earth's atmosphere are presented. Suppression of the lunar fluxes relative to the terrestrial fluxes is found. At energies >10 GeV, the suppression approaches a maximum of order 10^-4. The lower background environment suggests that the Moon may be advantageous for future particle astrophysics endeavors. This work was supported in part by NASA grant NNG04GA52G and the support of the National Space Science and Technology Center cooperative agreements NCC8-200 and NNM05AA22A. Computing infrastructure was made possible by NSF grant ATM-0421267.

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