The gamma = 100 Beta-Beam revisited

Abstract

We study the performance of gamma = 100 Beta-Beam setups based on the decays of 8B and 8Li as a function of the achievable production fluxes and compare them with the standard setups based on 18Ne and 6He decays. For the standard setup we also investigate the physics potential for reduced 18Ne fluxes, since it seems experimentally challenging to achieve the baseline numbers. We find that, contrary to the standard setup, setups based in 8B and 8Li can be sensitive to the mass hierarchy down to values of sin^2 2theta_{13} > 10^-2 by themselves, due to the stronger matter effects granted by the higher energy of the neutrinos. On the other hand, the longer baseline required for neutrinos to oscillate at these higher energies reduces the statistics at the detector and fluxes around three times larger are required to reach the sensitivity to theta_{13} and CP violation for the smallest values of sin^2 2theta_{13} that the standard setup provides. We also studied the required suppression factor of the atmospheric background. In all the setups studied, we found that a suppression factor of 10^-4 is equivalent to removing completely the atmospheric background. Suppression factors of order 10^-3 do not imply a significant loss in sensitivity while suppressions of 10^-2 still allow good CP discovery potential if sin^2 2theta_{13} > 10^-2 and the flux is not too low.

20 pages, 4 figures. Minor clarifications, matches published version

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Cited by in corpus (11)

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• Optimization of neutrino oscillation facilities for large θ_{13}
• Precision on leptonic mixing parameters at future neutrino oscillation experiments
• Importance of nuclear effects in the measurement of neutrino oscillation parameters
• The MOMENT to search for CP violation
• EURONU WP6 2009 yearly report: Update of the physics potential of Nufact, superbeams and betabeams
• Study of Non-Standard Charged-Current Interactions at the MOMENT experiment
• Precision measurements on ${\delta }_{\text{CP}}$ in MOMENT
• A minimal Beta Beam with high-Q ions to address CP violation in the leptonic sector
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