Study of Multi-muon Events from EAS with the L3 Detector at Shallow Depth Underground

Abstract

We present first preliminary data from the L3+Cosmics experiment and results from Monte Carlo simulations of multi-muon events as observed 30 m underground.Comment: 3 pages, 2 figures; presented at the 6th International Workshop on Topics in Astroparticle and Underground Physics, TAUP99, September 6-10, 1999, Paris, Franc