The high energy muon spectrum in Extensive Air Showers: first data from LVD and EAS-TOP at Gran Sasso

We present evidence for a dependence of the average deep underground muon energies on shower size in the coincident EAS-TOP and LVD data at the Gran Sasso laboratories. The measured relation agrees with a mixed chemical composition of the cosmic ray primary spectrum at energies around 10(15) eV. (C) 1998 Elsevier Science B.V.9318519

SINGLE MUONS IN THE LARGE-VOLUME DETECTOR

The first angular distribution data from 5547 hours of operation of the LVD detector are presented. A total of 452,630 single muons were reconstructed for this period. We present, for the first time from Gran Sasso Laboratory, data at near-horizontal zenith angles.3524024

SEARCH FOR NEUTRINOS FROM COLLAPSING STARS WITH THE LVD AT GRAN-SASSO

The Large Volume Detector (LVD) in the Gran Sasso underground Laboratory is a multipurpose detector consisting of a large volume of liquid scintillator interleaved with limited streamer tubes. In this paper we discuss its power to study low energy cosmic neutrinos. The results show that the first of the five LVD towers, operational since June 1992 with 368 tons of liquid scintillator, is well suited to detect neutrinos from collapsing stars within all our Galaxy, over a wide range of burst duration (up to a few hundreds seconds). One year data, collected since June 1992, have been analized and results are here discussed. No evidence for burst candidates has been found in this period of data taking.3526726

MULTIPLE MUON EVENTS OBSERVED IN THE LVD EXPERIMENT

This is a progress report on the multiple muon events recorded by the first tower of the LVD detector at the Gran Sasso Laboratory. About 17,000 multiple muon events have been observed since the LVD first tower started operation in June 1992. Presented here are the measured multiplicity distribution and separation distribution of muon pairs in the bundles.3524324

THE LARGE-VOLUME DETECTOR (LVD) - A MULTIPURPOSE UNDERGROUND DETECTOR AT GRAN-SASSO

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MULTICOMPONENT EAS OBSERVATIONS FROM EAS-TOP AND LVD AT GRAN-SASSO

EAS-TOP (at the surface) and LVD (deep underground) provide a telescope for a multicomponent study of Extensive Air Showers (EAS). Examples of different classes of events observed in coincidence and their physical significance are presented and discussed.3525926