Sensitivity to theta(13) of the CERN to Gran Sasso neutrino beam

Abstract

The sensitivity of the present CNGS beam to the sub-dominant ${\nu }_{\mu }\leftrightarrow {\nu }_e$ oscillations in the region indicated by the atmospheric neutrino experiments is investigated. In particular, we present a revised analysis of the OPERA detector and discuss the sensitivity to ${\theta }_{13}$ of ICARUS and OPERA combined. We show that the CNGS beam optimised for ${\nu }_{\tau }$ appearance, will improve significantly (about a factor 5) the current limit of CHOOZ and explore most of the region ${\sin }^{2}2{\theta }_{13}\simeq \mathcal{O}(10^{-2})$.