Complementarity Between Hyperkamiokande and DUNE in Determining Neutrino Oscillation Parameters

Fukasawa, Shinya; Ghosh, Monojit; Yasuda, Osamu

doi:10.48550/arxiv.1607.03758

Cited by 10 publications

(24 citation statements)

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“…In Fig 6 of Ref. [44], there is almost no CPV sensitivity for 0 < δ < π for T2HK, which has not been found in our results, while their results for DUNE are similar to ours. This feature is explained as being due to the lack of MO sensitivity at T2HK, allowing for degeneracies to limit the sensitivity.…”

Section: Cp Violation Sensitivitysupporting

confidence: 72%

“…This will affect our simulation, for example leading to poorer CPV sensitivity for IO, and in Section 4 we will show results for a band of θ 23 spanning both solutions to mitigate this asymmetry. We point out that our treatment of the external data, which attempts to accurately model the global constraints beyond the approximation of independent Gaussians, leads to some differences between our results and those of previous studies [21,38,44]. The differences can be traced to two key features: first, we take into account the significantly non-Gaussian behaviour of the global constraints at higher significances.…”

Section: Methodsmentioning

confidence: 59%

“…Although the question of the combined sensitivity of DUNE and T2HK has been studied before (most recently in [44]), our work brings three new elements to the discussion. Firstly, our work incorporates the significant redesign and development work that has been performed in the last few years on both designs.…”

Section: Introductionmentioning

confidence: 98%

“…Firstly, our work incorporates the significant redesign and development work that has been performed in the last few years on both designs. Our simulation of T2HK is particularly noteworthy, departing significantly from those used in previous comparable analyses [44] by incorporating up-to-date information about detector performance from the collaboration's in-house simulation, and has been carefully calibrated against previously published results. Secondly, we thoroughly address the precision measurement of δ and its phenomenology, often deemed a secondary question in earlier studies, but one which is increasingly central to the aims of the long-baseline programme, and which has significant theoretical implications.…”

Section: Introductionmentioning

confidence: 99%

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Sensitivities and synergies of DUNE and T2HK

et al. 2017

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Long-baseline neutrino oscillation experiments, in particular Deep Underground Neutrino Experiment (DUNE) and Tokai to Hyper-Kamiokande (T2HK), will lead the effort in the precision determination of the as yet unknown parameters of the leptonic mixing matrix. In this article, we revisit the potential of DUNE, T2HK and their combination in light of the most recent experimental information. As well as addressing more conventional questions, we pay particular attention to the attainable precision on {\delta}, which is playing an increasingly important role in the physics case of the long-baseline programme. We analyse the complementarity of the two designs, identify the benefit of a programme comprising distinct experiments and consider how best to optimise the global oscillation programme. This latter question is particularly pertinent in light of a number of alternative design options which have recently been mooted: a Korean second detector for T2HK and different beams options at DUNE. We study the impact of these options and quantify the synergies between alternative proposals, identifying the best means of furthering our knowledge of the fundamental physics of neutrino oscillation.Comment: 54 pages, 26 figure

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Section: Cp Violation Sensitivitysupporting

confidence: 72%

Section: Methodsmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Sensitivities and synergies of DUNE and T2HK

et al. 2017

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“…The example of such experiments are T2HK [16], T2HKK [17] and DUNE [18]. Due to smaller baseline T2HK will not have much hierarchy sensitivity in the unfavorable parameter space but it can have excellent sensitivity in the favorable parameter space [19,20]. Thus if nature chooses a favorable value of the unknown parameters then T2HK will be sufficient to determine them at a conclusive level.…”

Section: Introductionmentioning

confidence: 99%

Effect of systematics in the T2HK, T2HKK, and DUNE experiments

Ghosh

Yasuda

2017

Phys. Rev. D

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T2HK and T2HKK are the proposed extensions of the of T2K experiments in Japan and DUNE is the future long-baseline program of Fermilab. All these three experiments will use extremely high beam power and large detector volumes to observe neutrino oscillation. Because of the large statistics, these experiments will be highly sensitive to systematics. Thus a small change in the systematics can cause a significant change in their sensitivities. To understand this, we do a comparative study of T2HK, T2HKK and DUNE with respect to their systematic errors. Specifically we study the effect of the systematics in the determination of neutrino mass hierarchy, octant of the mixing angle $\theta_{23}$ and $\delta_{CP}$ in the standard three flavor scenario and also analyze the role of systematic uncertainties in constraining the parameters of the nonstandard interactions in neutrino propagation. Taking the overall systematics for signal and background normalization, we quantify how the sensitivities of these experiments change if the systematics are varied from $1\%$ to $7\%$.Comment: 11 pages, 5 figures, Version accepted in Phys. Rev.

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Signatures of a light sterile neutrino in T2HK

Agarwalla

Chatterjee

Palazzo

2018

J. High Energ. Phys.

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We investigate the performance of T2HK in the presence of a light eV scale sterile neutrino. We study in detail its influence in resolving fundamental issues like mass hierarchy, CP-violation (CPV) induced by the standard CP-phase δ 13 and new CP-phase δ 14 , and the octant ambiguity of θ 23 . We show for the first time in detail that due to the impressive energy reconstruction capabilities of T2HK, the available spectral information plays an important role to enhance the mass hierarchy discovery reach of this experiment in 3ν framework and also to keep it almost intact even in 4ν scheme. This feature is also of the utmost importance in establishing the CPV due to δ 14 . As far as the sensitivity to CPV due to δ 13 is concerned, it does not change much going from 3ν to 4ν case. We also examine the reconstruction capability of the two phases δ 13 and δ 14 , and find that the typical 1σ uncertainty on δ 13 (δ 14 ) in T2HK is ∼ 15 0 (30 0 ). While determining the octant of θ 23 , we face a complete loss of sensitivity for unfavorable combinations of unknown δ 13 and δ 14 .

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Complementarity Between Hyperkamiokande and DUNE in Determining Neutrino Oscillation Parameters

Cited by 10 publications

References 0 publications

Sensitivities and synergies of DUNE and T2HK

Sensitivities and synergies of DUNE and T2HK

Effect of systematics in the T2HK, T2HKK, and DUNE experiments

Signatures of a light sterile neutrino in T2HK

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