MEASUREMENT OF THE p/p RATIO IN COSMIC RAYS USING THE MOON SHADOW WITH THE L3+C DETECTOR

Abstract

The observation of the Moon shadow effect with the L3+C detector is reported. The expected offset and elongation of the Moon shadow due to the geomagnetic field are clearly observed. A determination of the angular resolution and pointing error has been performed through this observation. A preliminary upper limit of the p/p ratio in cosmic rays is given in the TeV region.