Comment on "Observation of electron-antineutrino disappearance at Daya Bay"

TL;DR

This paper critiques the Daya Bay neutrino experiment's measurement of the mixing angle θ13, highlighting potential uncertainties and distortions arising from applying KamLAND parameters without accounting for geoneutrino spectrum variations.

Contribution

It demonstrates that applying KamLAND parameters directly to Daya Bay data can lead to high uncertainties and distortions in the measurement of θ13.

Findings

Applying KamLAND parameters introduces high uncertainty.

Geoneutrino spectrum variations affect θ13 measurement.

Potential distortions in neutrino mixing angle estimates.

Abstract

In recent Letter by An et al. [arXiv:1203.1669] Daya Bay measurements of non-zero value for the neutrino mixing angle {\theta}_{13} with a significance of 5.2 standard deviations were reported. The value of sin^2 {\theta}_{13} was determined with a {\chi}^2 constructed with pull terms accounting for the correlation of the systematic errors. We show that a direct applying of the KamLAND parameters of mixing to Daya Bay-experiment under nonequilibrium geoneutrino spectrum of the nuclear burning process within the framework of nonzero nuclear georeactor {\chi}^2 -hypothesis will produce a high uncertainty level and, as a result, a substantial distortion of the actual value of the neutrino mixing angle {\theta}_{13}.