Chasing ${\theta }_{13}$ with new reactor neutrino experiments

Abstract

It is now widely accepted that a new middle baseline disappearance reactor neutrino experiment with multiple detectors could provide a clean measurement of the ${\theta }_{13}$ mixing angle, free from any parameter degeneracies and correlations induced by matter effect and the unknown leptonic Dirac CP phase. The current best constraint on the third mixing angle comes from the Chooz reactor neutrino experiment ${\sin }^2(2{\theta }_{13})<0.2$ (90 C.L., $\Delta m_{\mathrm{atm}}^2=2.010^{-3}$ eV${}^2$). Several projects of experiment, with different timescales, have been proposed over the last two years all around the world. Their sensitivities range from ${\sin }^2(2{\theta }_{13})<$ 0.01 to 0.03, having thus an excellent discovery potential of the ${\nu }_e$ fraction of ${\nu }_3$.

Talk given at the 6th International Workshop on Neutrino Factories & Superbeams, July 26-Aug 1, 2004, Osaka, Japan. 5 pages

References in corpus (6)

• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Search for neutrino oscillations on a long base-line at the CHOOZ nuclear power station
• Reactor Measurement of ${\theta }_{13}$ and Its Complementarity to Long-Baseline Experiments
• Reactor Neutrino Experiments Compared to Superbeams
• Exploring Leptonic CP Violation by Reactor and Neutrino Superbeam Experiments
• The Kr2Det project: Search for mass-3 state contribution |U_{e3}|^2 to the electron neutrino using a one reactor - two detector oscillation experiment at Krasnoyarsk underground site