Terrestrial matter effects on reactor antineutrino oscillations at JUNO or RENO-50: how small is small?

Abstract

We have carefully examined, in both analytical and numerical ways, how small the terrestrial matter effects can be in a given medium-baseline reactor antineutrino oscillation experiment like JUNO or RENO-50. Taking the ongoing JUNO experiment for example, we show that the inclusion of terrestrial matter effects may reduce the sensitivity of the neutrino mass ordering measurement by Δχ^2_{\rm MO} \simeq 0.6, and a neglect of such effects may shift the best-fit values of the flavor mixing angle θ_{12} and the neutrino mass-squared difference Δ_{21} by about 1σto 2σin the future data analysis. In addition, a preliminary estimate indicates that a 2σsensitivity of establishing the terrestrial matter effects can be achieved for about 10 years of data taking at JUNO with the help of a proper near detector implementation.

LaTex 16 pages, 7 figures, more discussions and references added. Accepted for publication in Chinese Physics C

References in corpus (7)

• Observation of electron-antineutrino disappearance at Daya Bay
• Updated fit to three neutrino mixing: status of leptonic CP violation
• Neutrino oscillations refitted
• Neutrino masses and mixings: Status of known and unknown $3\nu$ parameters
• Neutrino Mass Hierarchy
• Analytical approximations for matter effects on CP violation in the accelerator-based neutrino oscillations with E \lesssim 1 GeV
• Shifts of neutrino oscillation parameters in reactor antineutrino experiments with non-standard interactions

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