Neutrino Factory Superbeam

Abstract

We discuss the optimization of a neutrino factory for large \sin^2 2 θ_{13}, where we assume minimum effort on the accelerator side. This implies that we use low muon energies for the price of an optimized detection system. We demonstrate that such a neutrino factory performs excellent if combined with the electron neutrino appearance channel. Instead of the platinum channel operated with the muon neutrinos from the muon decays, we propose to use the initial superbeam from the decaying pions and kaons, which might be utilized at little extra effort. Since we assume out-of-phase bunches arriving at the same detector, we do not require electron charge identification. In addition, we can choose the proton energy such that we obtain a synergistic spectrum peaking at lower energies. We find that both the superbeam and the neutrino factory beam should used at the identical baseline to reduce matter density uncertainties, possibly with the same detector. This effectively makes the configuration a single experiment, which we call ``neutrino factory superbeam''. We demonstrate that this experiment outperforms a low-energy neutrino factory or a wide band beam alone beyond a simple addition of statistics.

7 pages, 5 figures, 1 table

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Cited by in corpus (10)

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• A Neutrino Factory for both Large and Small theta_13
• On the improvement of the low energy neutrino factory
• Physics with near detectors at a neutrino factory
• Optimization of the Neutrino Factory, revisited
• A low energy neutrino factory with non-magnetic detectors
• Neutrino factory in stages: Low energy, high energy, off-axis
• Minimal Neutrino Beta Beam for Large theta_13
• EUROnu-WP6 2010 Report
• Optimization of a Neutrino Factory: Discovery Machine versus Precision Instrument