Impact of Active-Sterile Neutrino Mixing at Currently Running Long-Baseline Experiments

Majhi, Rudra; Soumya, C.; Mohanta, Rukmani

doi:10.1007/978-3-030-29622-3_46

Cited by 2 publications

(2 citation statements)

References 46 publications

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“…Apart from that if there is a near detector (ND), then it is also possible to probe the oscillations that are governed by the light sterile neutrino mass-squared differences. Analyses of sterile neutrinos in the context of long-baseline neutrino oscillation experiments have been carried out previously in the literature [6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity to light sterile neutrinos at ESSnuSB

Ghosh

Ohlsson

Rosauro-Alcaraz

2020

J. High Energ. Phys.

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We present a comprehensive analysis in the 3+1 active-sterile neutrino oscillation scenario for the sensitivity of the ESSnuSB experiment in the presence of light sterile neutrinos assuming both a far (FD) and a near (ND) detector. Our analysis show that when the ND is included, the results are significantly different compared to the ones obtained with the FD only. We find that the capability of ESSnuSB to constrain the sterile mixing parameters is sin 2 2θ µe ∼ 10 −4 for ∆m 2 = 1 eV 2 if the ND is included and it becomes sin 2 2θ µe ∼ 10 −2 without the ND. Furthermore, we show that the sensitivity can go down to sin 2 2θ µe ∼ 10 −3 for the most conservative choice of the systematics on the ND. Comparing the sensitivity with T2HK, T2HKK, and DUNE by considering the FD only, we find that the sensitivity of ESSnuSB is smaller for most of the parameter space. Studying the CP violation sensitivity, we find that if the ND is included, it can be larger in the 3+1 scenario than in the standard one. However, if the ND is not included, the sensitivity is smaller compared to the one in the standard scenario. We also find that the CP violation sensitivity due to δ 13 is larger compared to the one induced by δ 24 . The sensitivities are slightly better for the dominant neutrino running ratio of ESSnuSB.

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Section: Introductionmentioning

confidence: 99%

Sensitivity to light sterile neutrinos at ESSnuSB

Ghosh

Ohlsson

Rosauro-Alcaraz

2020

J. High Energ. Phys.

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“…We also briefly demonstrate the implications of light sterile neutrinos on neutrinoless double-beta decay. A part of this work has been reported in [39]. The impact of one sterile neutrino in the sensitivity studies of these two experiments towards neutrino mass hierarchy (MH) and CP violation discovery has been examined in a recent work [28].…”

Section: Introductionmentioning

confidence: 99%

Light sterile neutrinos and their implications on currently running long-baseline and neutrinoless double-beta decay experiments

Majhi¹,

Soumya²,

Mohanta

2020

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

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Recent νe appearance data from the Mini Booster Neutrino Experiment support the excess of events reported by the Liquid Scintillator Neutrino Detector, which provides an indirect hint of the existence of eV-scale sterile neutrinos. As these sterile neutrinos can mix with the standard active neutrinos, in this paper we explore the effect of such active–sterile mixing on the determination of various oscillation parameters by the currently running long-baseline neutrino experiments T2K and NOνA. We find that the existence of sterile neutrinos can lead to new kinds of degeneracies among these parameters which would substantially deteriorate the mass hierarchy sensitivity of the NOνA experiment. We further notice that the inclusion of data from the T2K experiment helps in resolving the degeneracies. The impact of new CP-violating phases δ14 and δ34 on the maximal CP violation exclusion sensitivity for the NOνA experiment has also been illustrated. Finally, we discuss the implication of such light sterile neutrinos on neutrinoless double-beta decay processes in line with recent experimental results, as well as on the sensitivity reach of future experiments.

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Impact of Active-Sterile Neutrino Mixing at Currently Running Long-Baseline Experiments

Cited by 2 publications

References 46 publications

Sensitivity to light sterile neutrinos at ESSnuSB

Sensitivity to light sterile neutrinos at ESSnuSB

Light sterile neutrinos and their implications on currently running long-baseline and neutrinoless double-beta decay experiments

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