Identification of showers with the core outside the ARGO-YBJ detector

Abstract

In this paper we present a procedure able to identify and reject showers with the core outside the ARGO-YBJ carpet boundaries. The efficiency of this method is investigated for different primary energies and fiducial areas. A comparison of the results for gamma and proton induced showers is also presented.

10 pages, Presented at the "Incontro Nazionale di Astrofisica delle Alte Energie", Rome 15-16 May 2003