Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-01-19
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 2 figures
Scientific paper
We point out that the measurement of the $L/E$ distribution of atmospheric neutrino events with sufficient resolution in order to observe the characteristic modulations of neutrino oscillations would provide a unique way to test the $\numunux$ oscillations nature of the atmospheric neutrino anomaly in the parameter range $5\times 10^{-4} < \Delta m^2 < 2\times 10^{-3}\rm\ eV^2$. With an integrated exposure of a few tens of kiloton-year, this method can cover the lower part of the $\Delta m^2$ region of the currently allowed atmospheric neutrino solution and is therefore complementary to the one explorable with planned long-baseline neutrino beam experiments. We stress that experimentally this method relies on the ability to measure high energy muons ($E_\mu>5\rm GeV$). A large magnetized calorimeter of several kilotons would be ideally suited for this measurement. The existing LEP detectors augmented with atmospheric neutrino triggers could also be used to perform such a study.
Mannocchi Giampaolo
Periale L.
Picchi P.
Pietropaolo F.
Ragazzi Stefano
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