Neutrino factory optimization for nonstandard interactions

Kopp, Joachim; Ota, Toshihiko; Winter, Walter

doi:10.1103/physrevd.78.053007

Cited by 79 publications

(120 citation statements)

References 72 publications

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“…There are some studies on the performance of low energy neutrino factories [15] in the context of standard model interactions of neutrinos with matter [29,[31][32][33][34][35][36][37][38] and also in presence of NSI [39][40][41][42][43]. In the works related to NSI [39][40][41][42][43] longer baselines like 4000 and 7500 kms has been considered to have larger NSI effect on neutrino oscillation experiments so as to find better NSI sensitivity and in that context CP violation has also been studied.…”

Section: Introductionmentioning

confidence: 99%

The discovery reach ofCPviolation in neutrino oscillation with non-standard interaction effects

Rahman

Dasgupta

Adhikari

2015

J. Phys. G: Nucl. Part. Phys.

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We have studied the CP violation discovery reach in neutrino oscillation experiment with superbeam, neutrino factory and monoenergetic neutrino beam from electron capture process. For NSI satisfying model-dependent bound for shorter baselines (like CERN-Fréjus set-up ) there is insignificant effect of NSI on the the discovery reach of CP violation due to δ. Particularly, for superbeam and neutrino factory we have also considered relatively longer baselines for which there could be significant NSI effects on CP violation discovery reach for higher allowed values of NSI. For monoenergetic beam only shorter baselines are considered to study CP violation with different nuclei as neutrino sources. Interestingly for non-standard interactions -εeµ and εeτ of neutrinos with matter during propagation in longer baselines in superbeam, there is possibility of better discovery reach of CP violation than that with only Standard Model interactions of neutrinos with matter. For complex NSI we have shown the CP violation discovery reach in the plane of Dirac phase δ and NSI phase φij. The CP violation due to some values of δ remain unobservable with present and near future experimental facilities in superbeam and neutrino factory . However, in presence of some ranges of off-diagonal NSI phase values there are some possibilities of discovering total CP violation for any δCP value even at 5σ confidence level for neutrino factory. Our analysis indicates that for some values of NSI phases total CP violation may not be at all observable for any values of δ. Combination of shorter and longer baselines could indicate in some cases the presence of NSI. However, in general for NSIs 1 the CP violation discovery reach is better in neutrino factory set-ups. Using a neutrino beam from electron capture process for nuclei 110 50 Sn and 152 Yb, we have shown the discovery reach of CP violation in neutrino oscillation experiment. Particularly for 110 50 Sn nuclei CP violation could be found for about 51% of the possible δ values for a baseline of 130 km with boost factor γ = 500. The nuclei 152 Yb is although technically more feasible for the production of mono-energetic beam, but is found to be not suitable in obtaining good discovery reach of CP

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Section: Introductionmentioning

confidence: 99%

The discovery reach ofCPviolation in neutrino oscillation with non-standard interaction effects

Rahman

Dasgupta

Adhikari

2015

J. Phys. G: Nucl. Part. Phys.

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“…It defines a baseline setup of a high energy neutrino factory (HENF) with E µ = 25 GeV and two baselines L 1 4 000 km and L 2 7 500 km (the "magic" baseline) operated by two racetrack-shaped storage rings, where the muon energy is 25 GeV (for optimization questions, see Refs. [5,6,10,[20][21][22][23][24]). A key component is the magnetized iron detector (MIND) as far detector, where the magnetization is necessary to distinguish the "right-sign" (e.g., from ν µ → ν µ ) from the "wrong-sign" (e.g., fromν e →ν µ ) muons.…”

Section: Introductionmentioning

confidence: 99%

Neutrino factory in stages: Low energy, high energy, off-axis

Tang

Winter

2010

Phys. Rev. D

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We discuss neutrino oscillation physics with a neutrino factory in stages, including the possibility of upgrading the muon energy within the same program. We point out that a detector designed for the low energy neutrino factory may be used off-axis in a high energy neutrino factory beam. We include the re-optimization of the experiment depending on the value of θ 13 found. As upgrade options, we consider muon energy, additional baselines, a detector mass upgrade, an off-axis detector, and the platinum (muon to electron neutrino) channels. In addition, we test the impact of Daya Bay data on the optimization. We find that for large θ 13 (θ 13 discovered by the next generation of experiments), a low energy neutrino factory might be the most plausible minimal version to test the unknown parameters. However, if a higher muon energy is needed for new physics searches, a high energy version including an off-axis detector may be an interesting alternative. For small θ 13 (θ 13 not discovered by the next generation), a plausible program could start with a low energy neutrino factory, followed by energy upgrade, and then baseline or detector mass upgrade, depending on the outcome of the earlier phases.

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“…references [26,27]; this has been shown for the ε m eτ -ε m τ τ correlation by explicit numerical calculation in Ref. [47]. The strongest improvement in bounds happens for flavor-changing NSI, but this improvement is hardly dependent on the data from the 2 nd oscillation maximum.…”

Section: Non-standard Interactionsmentioning

confidence: 80%

Erratum: two experiments for the price of one? The role of the second oscillation maximum in long baseline neutrino experiments

Huber,

Kopp

2011

J. High Energ. Phys.

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We investigate the quantitative impact that data from the second oscillation maximum has on the performance of wide band beam neutrino oscillation experiments. We present results for the physics sensitivities to standard three flavor oscillation, as well as results for the sensitivity to non-standard interactions. The quantitative study is performed using an experimental setup similar to the Fermilab to DUSEL Long Baseline Neutrino Experiment (LBNE). We find that, with the single exception of sensitivity to the mass hierarchy, the second maximum plays only a marginal role due to the experimental difficulties to obtain a statistically significant and sufficiently background-free event sample at low energies. This conclusion is valid for both waterČerenkov and liquid argon detectors. Moreover, we confirm that non-standard neutrino interactions are very hard to distinguish experimentally from standard three-flavor effects and can lead to a considerable loss of sensitivity to θ 13 , the mass hierarchy and CP violation. * pahuber@vt.edu † jkopp@fnal.gov 1 arXiv:1010.3706v3 [hep-ph] 9

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Neutrino factory optimization for nonstandard interactions

Cited by 79 publications

References 72 publications

The discovery reach ofCPviolation in neutrino oscillation with non-standard interaction effects

The discovery reach ofCPviolation in neutrino oscillation with non-standard interaction effects

Neutrino factory in stages: Low energy, high energy, off-axis

Erratum: two experiments for the price of one? The role of the second oscillation maximum in long baseline neutrino experiments

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