CERN-INO magical Beta-beam experiment: A high precision probe for neutrino parameters

Abstract

This talk is an attempt to underscore in detail the physics reach of an experimental set-up where neutrinos produced in a beta-beam facility at CERN would be observed in the proposed large magnetized iron calorimeter detector (ICAL) at the India-based Neutrino Observatory (INO). The "magical" CERN-INO beta-beam set-up offers an excellent avenue to use the "Golden" channel (${\nu }_e\to {\nu }_{\mu }$) oscillation probability for a simultaneous determination of the neutrino mass ordering and ${\theta }_{13}$ avoiding the impact of the CP phase ${\delta }_{CP}$ on these measurements. 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.

Comments: 5 pages, 3 figures. To appear in the proceedings of the 10th International Workshop on Neutrino Factories, Super beams and Beta beams (NUFACT08), June 30 - July 5 2008, Valencia, Spain