Observation of the Shadowing of Cosmic Rays by the Moon using a Deep Underground Detector
High Energy Physics - Experiment
2008-11-26 v1
Abstract
Using data collected by the MACRO experiment during the years 1989-1996, we show evidence for the shadow of the moon in the underground cosmic ray flux with a significance of 3.6 sigma. This detection of the shadowing effect is the first by an underground detector. A maximum-likelihood analysis is used to determine that the angular resolution of the apparatus is 0.9+/-0.3 degrees. These results demonstrate MACRO's capabilities as a muon telescope by confirming its absolute pointing ability and quantifying its angular resolution.
Keywords
Cite
@article{arxiv.hep-ex/9807006,
title = {Observation of the Shadowing of Cosmic Rays by the Moon using a Deep Underground Detector},
author = {The MACRO Collaboration and M. Ambrosio et al},
journal= {arXiv preprint arXiv:hep-ex/9807006},
year = {2008}
}
Comments
14 pages, 8 figures Submitted to Phys. Rev. D