Emilio Ciuffoli

Confidence in a neutrino mass hierarchy determination

A bstractIn the next decade, a number of experiments will attempt to determine the neutrino mass hierarchy. Feasibility studies for such experiments generally determine the statistic

Mass hierarchy determination using neutrinos from multiple reactors

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The Neutrino Mass Hierarchy at Reactor Experiments now that theta13 is Large

. As the hierarchy is a discrete choice, Δχ2 does not obey a one degree of freedom χ2 distribution and so the number of σ’s of sensitivity to the hierarchy is not the square root of

Advantages of Multiple Detectors for the Neutrino Mass Hierarchy Determination at Reactor Experiments

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Neutrino mass hierarchy from nuclear reactor experiments

. We present a simple Bayesian formula for the sensitivity to the hierarchy determination that can be expected from the median experiment as a function of

The leptonic CP phase from muon decay at rest with two detectors

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Neutrino physics with accelerator driven subcritical reactors

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Medium baseline reactor neutrino experiments with two identical detectors

A bstractWe report the results of Monte Carlo simulations of a medium baseline reactor neutrino experiment. The difference in baselines resulting from the 1 km separations of Daya Bay and Ling Ao reactors reduces the amplitudes of 1-3 oscillations at low energies, decreasing the sensitivity to the neutrino mass hierarchy. A perpendicular detector location eliminates this effect. We simulate experiments under several mountains perpendicular to the Daya Bay/Ling Ao reactors, considering in particular the background from the TaiShan and YangJiang reactor complexes. In general the hierarchy can be determined most reliably underneath the 1000 meter mountain BaiYunZhang, which is 44.5 km from Daya Bay. If some planned reactors are not built then nearby 700 meter mountains at 47-51 km baselines gain a small advantage. Neglecting their low overhead burdens, hills near BaiMianShi or DongKeng would be the optimal locations. We use a weighted Fourier transform to avoid a spurious dependence on the high energy neutrino spectrum and find that a neural network can extract quantities which determine the hierarchy marginally better than the traditional RL + PV.

Showering cosmogenic muons in a large liquid scintillator

A bstractNow that θ13 is known to be large, a medium baseline reactor experiment can observe the fine structure of the electron antineutrino survival probability curve, approximately periodic oscillations in L/E with period

Measuring θ12 despite an uncertain reactor neutrino spectrum

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