Reactor Measurement of theta_12; Principles, Accuracies and Physics Potentials
| dc.creator | Minakata, H. | |
| dc.creator | Nunokawa, H. | |
| dc.creator | Teves, W. J. C. | |
| dc.creator | Funchal, R. Zukanovich | |
| dc.date | 2004-07-29 | |
| dc.date | 2005-01-07 | |
| dc.date.accessioned | 2026-07-07T10:29:14Z | |
| dc.date.available | 2026-07-07T10:29:14Z | |
| dc.description | We discuss reactor measurement of θ_{12} which has a potential of reaching the ultimate sensitivity which surpasses all the methods so far proposed. The key is to place a detector at an appropriate baseline distance from the reactor neutrino source to have an oscillation maximum at around a peak energy of the event spectrum in the absence of oscillation. By a detailed statistical analysis the optimal distance is estimated to be \simeq (50-70) km x [8 x 10^{-5} eV^2/Δm^2_{21}], which is determined by maximizing the oscillation effect in the event number distribution and minimizing geo-neutrino background contamination. To estimate possible uncertainty caused by surrounding nuclear reactors in distance of \sim 100 km, we examine a concrete example of a detector located at Mt. Komagatake, 54 km away from the Kashiwazaki-Kariwa nuclear power plant in Japan, the most powerful reactor complex in the world. The effect turns out to be small. Under a reasonable assumption of systematic error of 4% in the experiment, we find that sin^2{θ_{12}} can be determined to the accuracy of \simeq 2% (\simeq 3%), at 68.27% CL for 1 degree of freedom, for 60 GW_th kton yr (20 GW_th kton yr) operation. We also discuss implications of such an accurate measurement of θ_{12}. | |
| dc.description | 31 pages, 8 figures. version to appear in PRD | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0407326 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0407326 | |
| dc.identifier | Phys.Rev.D71:013005,2005 | |
| dc.identifier | doi:10.1103/PhysRevD.71.013005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177728 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Reactor Measurement of theta_12; Principles, Accuracies and Physics Potentials | |
| dc.type | text |