arXiv subjects

Nicolao Fornengo

Publications and source records attributed to Nicolao Fornengo.

57 records · Page 4Linked to original sources

arXiv2000

Standard and exotic interpretations of the atmospheric neutrino data

The present status of some theoretical interpretations of the atmospheric neutrino deficit is briefly discussed. Specifically, we show the results for the FC mechanism and for the standard oscillation hypothesis, both in the active and in the sterile channels. All these mechanisms are able to fit the present data to a good statistical level. Among them, the nu_mu --> nu_tau oscillation is certainly the best explanation to the atmospheric neutrino deficit, providing a remarkably good agreement with the data.

hep-ph↗

arXiv1999

Neutrino oscillation effect on the indirect signal of neutralino dark matter from the Earth core

We investigate the effect induced by neutrino oscillation on the dark matter indirect detection signal which consists in a muon neutrino flux produced by neutralino annihilation in the Earth core. We consider the neutrino oscillation parameters relevant to the atmosferic neutrino deficit, both in the nu_mu -> nu_tau and nu_mu -> nu_s cases.

hep-ph↗

arXiv1998

SUPERSYMMETRIC DARK MATTER: MSSM and SUGRA schemes in the light of a possible annual modulation effect in WIMP direct search

Recently the DAMA/NaI Collaboration reported further indication of a possible modulation effect in WIMP direct detection. In this note we discuss the relevance of this result for supersymmetric theories where the neutralino is the dark matter candidate. We specifically consider the Minimal Supersymmetric extension of the Standard Model (MSSM) and Supergravity-inspired schemes, with possible deviations of the unification conditions at the GUT scale in the Higgs sector. The main results of our analysis show that the annual modulation data are widely compatible with an interpretation in terms of a relic neutralino as the major component of dark matter in the Universe. We also discuss the implications for searches of supersymmetry at accelerators and for indirect searches of neutralino dark matter.

hep-ph↗