Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-04-06
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 2 figures
Scientific paper
Within the LAGUNA design study, seven candidate sites are being assessed for their feasibility to host a next-generation, very large neutrino observatory. Such a detector will be expected to feature within a future European accelerator neutrino programme (Superbeam or Beta Beam), and hence the distance from CERN is of critical importance. In this article, the focus is a $^{18}$Ne and $^{6}$He Beta Beam sourced at CERN and directed towards a 50 kton Liquid Argon detector located at the LAGUNA sites: Slanic (L=1570 km) and Pyh\"{a}salmi (L=2300 km). To improve sensitivity to the neutrino mass ordering, these baselines are then combined with a concurrent run with the same flux directed towards a large Water \v{C}erenkov detector located at Canfranc (L=650 km). This degeneracy breaking combination is shown to provide comparable physics reach to the conservative Magic Baseline Beta Beam proposals. For $^{18}$Ne ions boosted to $\gamma=570$ and $^{6}$He ions boosted to $\gamma=350$, the correct mass ordering can be determined at Slanic for all $\delta$ when $\sin^{2}2\theta_{13}>4\cdot 10^{-3}$ in this combination.
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