We investigate the possible effects of short-baseline ν̅ e disappearance implied by the reactor antineutrino anomaly on the Double-Chooz determination of ϑ13 through the normalization of the initial antineutrino flux with the Bugey-4 measurement. We show that the effects are negligible and the value of ϑ13 obtained by the Double-Chooz collaboration is accurate only if Δm412≳3  eV2. For smaller values of Δm412 the short-baseline oscillations are not fully averaged at Bugey-4 and the uncertainties due to the reactor antineutrino anomaly can be of the same order of magnitude of the intrinsic Double-Chooz uncertainties.

Effect of the reactor antineutrino anomaly on the first Double-Chooz results

LAVEDER, MARCO
2012

Abstract

We investigate the possible effects of short-baseline ν̅ e disappearance implied by the reactor antineutrino anomaly on the Double-Chooz determination of ϑ13 through the normalization of the initial antineutrino flux with the Bugey-4 measurement. We show that the effects are negligible and the value of ϑ13 obtained by the Double-Chooz collaboration is accurate only if Δm412≳3  eV2. For smaller values of Δm412 the short-baseline oscillations are not fully averaged at Bugey-4 and the uncertainties due to the reactor antineutrino anomaly can be of the same order of magnitude of the intrinsic Double-Chooz uncertainties.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2484850
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