arXiv subjects

F. Suekane

Publications and source records attributed to F. Suekane.

56 records · Page 4Linked to original sources

arXiv2003

Reactor Measurement of $θ_{13}$ and Its Complementarity to Long-Baseline Experiments

A possibility to measure $\sin^22θ_{13}$ using reactor neutrinos is examined in detail. It is shown that the sensitivity $\sin^22θ_{13}>0.02$ can be reached with 20 ton-year data by placing identical CHOOZ-like detectors at near and far distances from a giant nuclear power plant whose total thermal energy is 24.3 ${\text{GW}_{\text{th}}}$. It is emphasized that this measurement is free from the parameter degeneracies which occur in accelerator appearance experiments, and therefore the reactor measurement plays a role complementary to accelerator experiments. It is also shown that the reactor measurement may be able to resolve the degeneracy in $θ_{23}$ if $\sin^22θ_{13}$ and $\cos^22θ_{23}$ are relatively large.

hep-ph↗

arXiv2003

Precise measurement of $\sin^22θ_{13}$ using Japanese Reactors

After the KamLAND results, the remaining important targets in neutrino experiments are to measure still unknown 3 basic parameters; absolute neutrino mass scale, CP violation phase $δ_{CP}$ and last mixing angle $θ_{13}$. The angle $θ_{13}$ among them is expected to be measured in near future by long baseline accelerator experiments and reactor experiments. In this paper, a realistic idea of high sensitivity reactor measurement of $\sin^22θ_{13}$ is described. This experiment uses a giant nuclear power plant as the neutrino source and three identical detectors are used to cancel detector and neutrino flux uncertainties. The sensitivity reach on $\sin^22θ_{13}$ is $0.017\sim0.026$ at $Δm^2_{13} \sim 3 \times 10^{-3}eV^2$, which is five to seven times better than the current upper limit measured by CHOOZ.

hep-ex↗