2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/182561Using an analytical approach, the sensitivity to sin^2{2theta_13} with infinite statistics in a spectral analysis is investigated in reactor neutrino oscillation experiments with one reactor and two identical detectors. We derive an useful formula for the sensitivity which depends only two parameters sigma_db/\sqrt{n} (the uncorrelated bin-to-bin systematic error over the square-root of the number of bins) and sigma_dB (the bin-to-bin correlated detector specific systematic error).23 pages, 5 figures, revtex4High Energy Physics - Phenomenologytext