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 3.6σ. 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°. These results demonstrate MACRO’s capabilities as a muon telescope by confirming its absolute pointing ability and quantifying its angular resolution.
Observation of a Shadowing of Cosmic Rays by the Moon using a Deep Underground Detector / Barbarino, Giancarlo; Guarino, Fausto. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - STAMPA. - 59:(1999), pp. 12003-1-12003-5. [10.1103/PhysRevD.59.012003]
Observation of a Shadowing of Cosmic Rays by the Moon using a Deep Underground Detector
BARBARINO, GIANCARLO;GUARINO, FAUSTO
1999
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 3.6σ. 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°. These results demonstrate MACRO’s capabilities as a muon telescope by confirming its absolute pointing ability and quantifying its angular resolution.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
