Searches for new physics at the Hyper-Kamiokande experiment

Kelly, Kevin J.

doi:10.1103/physrevd.95.115009

Cited by 28 publications

(25 citation statements)

References 109 publications

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“…In the present work, we focus on the proposed experiment Tokai to Hyper Kamiokande (T2HK), which will make use of a very powerful neutrino beam shot from Tokai to Kamioka over a distance of 295 km. Our work complements other recent studies performed about DUNE [11][12][13][14][15] and T2HK [15][16][17][18]. Previous studies on sterile neutrinos at LBL experiments can be found in [19][20][21][22][23][24][25][26][27].…”

Section: Introductionsupporting

confidence: 87%

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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Section: Introductionsupporting

confidence: 87%

Signatures of a light sterile neutrino in T2HK

Agarwalla

Chatterjee

Palazzo

2018

J. High Energ. Phys.

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“…Comparing these results with other sensitivity studies performed in the literature, for experiments such as Hyper-Kamiokande [41,42] or MINOS+ [43,44], one can see that the experimental setups proposed here look very promising indeed, especially for constraining sin 2 2θ μe .…”

Section: B Sensitivity To Light Sterile Neutrinos At An Lbnf Near Desupporting

confidence: 55%

Exploring the potential of short-baseline physics at Fermilab

et al. 2018

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We study the capabilities of the short-baseline neutrino program at Fermilab to probe the unitarity of the lepton mixing matrix. We find the sensitivity to be slightly better than the current one. Motivated by the future DUNE experiment, we have also analyzed the potential of an extra liquid Argon near detector in the LBNF beamline. Adding such a near detector to the DUNE setup will substantially improve the current sensitivity on nonunitarity. This would help to remove CP degeneracies due to the new complex phase present in the neutrino mixing matrix. We also study the sensitivity of our proposed setup to light sterile neutrinos for various configurations.

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“…For a given set of neutrino and antineutrino oscillation parameters, we compute the expected number of signal and background events as a function of energy for the experiment of interest, as outlined in more detail in [49,50] for DUNE † and Ref. [32] for Hyper-K. More concretely, we generate expected signal and background yields for the following experimental oscillation channels:…”

Section: Analysis Methodsmentioning

confidence: 99%

“…As opposed to DUNE, Hyper-K will spend more time collecting data in the antineutrino mode, with a run-time-ratio of 1 : 3 neutrino to antineutrino mode. We simulate the atmospheric muon neutrino samples by inflating the atmospheric neutrino sample of Super-Kamiokande to correspond to ten years of data collection with a detector twenty times larger [32].…”

Section: Analysis Methodsmentioning

confidence: 99%

Neutrino versus antineutrino oscillation parameters at DUNE and Hyper-Kamiokande experiments

Gouvêa

Kelly

2017

Phys. Rev. D

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Testing, in a non-trivial, model-independent way, the hypothesis that the three-massive-neutrinos paradigm properly describes nature is among the main goals of the current and the next generation of neutrino oscillation experiments. In the coming decade, the DUNE and Hyper-Kamiokande experiments will be able to study the oscillation of both neutrinos and antineutrinos with unprecedented precision. We explore the ability of these experiments, and combinations of them, to determine whether the parameters that govern these oscillations are the same for neutrinos and antineutrinos, as prescribed by the CPT-theorem. We find that both DUNE and Hyper-Kamiokande will be sensitive to unexplored levels of leptonic CPT-violation. Assuming the parameters for neutrino and antineutrino oscillations are unrelated, we discuss the ability of these experiments to determine the neutrino and antineutrino mass-hierarchies, atmospheric-mixing octants, and CP-odd phases, three key milestones of the experimental neutrino physics program. Additionally, if the CPT-theorem is violated in nature in a way that is consistent with all present neutrino and antineutrino oscillation data, we find that DUNE and Hyper-Kamiokande have the potential to ultimately establish leptonic CPT-invariance violation.

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Searches for new physics at the Hyper-Kamiokande experiment

Cited by 28 publications

References 109 publications

Signatures of a light sterile neutrino in T2HK

Signatures of a light sterile neutrino in T2HK

Exploring the potential of short-baseline physics at Fermilab

Neutrino versus antineutrino oscillation parameters at DUNE and Hyper-Kamiokande experiments

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