Unraveling neutrino parameters with a magical beta-beam experiment at INO

Abstract

We expound in detail the physics reach of an experimental set-up in which the proposed large magnetized iron detector at the India-based Neutrino Observatory (INO) would serve as the far detector for a so-called beta-beam. If this pure $\nue$ and/or $\anue$ beam is shot from some source location like CERN such that the source-detector distance $L\simeq 7500$ km, the impact of the CP phase ${\delta }_{CP}$ on the oscillation probability and associated parameter correlation and degeneracies are almost negligible. This ``magical'' beta-beam experiment would have unprecedented sensitivity to the neutrino mass hierarchy and ${\theta }_{13}$, two of the missing ingredients needed for our understanding of the neutrino sector. With Lorentz boost $\gamma =650$ and irrespective of the true value of ${\delta }_{CP}$, the neutrino mass hierarchy could be determined at $3\sigma$ C.L. if ${\sin }^{2}2{\theta }_{13}(\mathrm{true})>5.6\times 10^{-4}$ and we can expect an unambiguous signal for ${\theta }_{13}$ at $3\sigma$ C.L. if ${\sin }^{2}2{\theta }_{13}(\mathrm{true})>5.1\times 10^{-4}$ independent of the true neutrino mass hierarchy.

26 pages, 20 eps figures, version to appear in Nucl.Phys.B

References in corpus (11)

• NOvA Proposal to Build a 30 Kiloton Off-Axis Detector to Study Neutrino Oscillations in the Fermilab NuMI Beamline
• Physics potential of the CERN-MEMPHYS neutrino oscillation project
• Topical Review on "Beta-beams"
• Neutrino mass hierarchy and ${\theta }_{13}$ with a magic baseline beta-beam experiment
• Alternating ions in a $\beta$-beam to solve degeneracies
• Can R-parity violating supersymmetry be seen in long baseline beta-beam experiments?
• Combining CPT-conjugate Neutrino channels at Fermilab
• Neutrino parameters from matter effects in $P_{ee}$ at long baselines
• Ionization cooled ultra pure beta-beams for long distance neu-e to neu-mu transitions, theta13 phase and CP-violation
• Neutrino oscillations: what is magic about the "magic" baseline?
• Probing Lepton Number Violating Interactions with Beta-beams

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• Optimizing the green-field beta beam: Small versus large theta_13
• EUROnu-WP6 2010 Report