arXiv subjects

M. Ambriola et al

Publications and source records attributed to M. Ambriola et al.

3 recordsLinked to original sources

arXiv1999

Capabilities of an Underwater Detector as a Neutrino Telescope and for the Neutrino Oscillation Search

We report on the results of a Monte Carlo simulation study of a km^3 scale deep underwater Cherenkov detector aimed at detecting neutrinos of astrophysical origin. This analysis has been undertaken as part of the NEMO R&D project to develop such an experiment close to the Southern Italian coasts. We have studied the reconstruction capabilities of various arrays of phototubes in order to determine the detector geometries which optimize performance and cost. We have also investigated the possibility of designing a detector with characteristics suited to an experiment on atmospheric neutrino oscillations.

hep-ex↗

arXiv1999

MACRO as a Telescope for Neutrino Astronomy

We use a sample of 990 upward-going muons, induced primarily by atmospheric neutrinos, to search for neutrinos of astrophysical origin. No evidence has been found using the event direction information. Flux limits of the order of 10^-15 cm^-2 s^-1 are imposed on current models for candidate point-sources. A space-time correlation search has been undertaken between 2328 BATSE gamma ray bursts (GRBs) and MACRO upward-going muons.

hep-ex↗

arXiv1999

Search for WIMPS using Upward-Going Muons in MACRO

We present updated results on the search for a neutrino signal from the core of the Earth and of the Sun induced by Weakly Interacting Massive Particles (WIMPs). In this paper we concentrate on neutralinos as WIMP candidates. The 971 and 642 events used respectively for the search from the Sun and from the Earth are compatible with the background of atmospheric neutrinos. Consequently we calculate flux limits for various search cones around these sources. Limits as a function of the neutralino mass are given and compared to the supersymmetric (SUSY) models.

hep-ex↗