Prospects of light sterile neutrino searches in long-baseline neutrino oscillations

Abstract The neutrino oscillation probabilities in vacuum and matter are discussed, considering the framework of three active and one light sterile neutrinos. We study in detail the rephasing invariants and CP asymmetry observables, and investigate the four-neutrino oscillations in long-baseline neu...

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Main Authors: Yakefu Reyimuaji, Chun Liu
Format: Article
Language:English
Published: SpringerOpen 2020-06-01
Series:Journal of High Energy Physics
Subjects:
Online Access:http://link.springer.com/article/10.1007/JHEP06(2020)094
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author Yakefu Reyimuaji
Chun Liu
author_facet Yakefu Reyimuaji
Chun Liu
author_sort Yakefu Reyimuaji
collection DOAJ
description Abstract The neutrino oscillation probabilities in vacuum and matter are discussed, considering the framework of three active and one light sterile neutrinos. We study in detail the rephasing invariants and CP asymmetry observables, and investigate the four-neutrino oscillations in long-baseline neutrino experiments, such as DUNE, NOνA and T2HK. Our results show that the matter effect enhances quite a significantly the oscillation probabilities of electron neutrino and electron antineutrino appearance channels within a certain energy range, while no considerable change arises in the CP asymmetry analysis due to the matter effect. Moreover, separation between the results with and without the sterile neutrino is not so significant and that is also affected by CP-violating phases. Comparing the results for these three experiments, all of them have similar features, nevertheless, sizes and separations of the oscillation probabilities in DUNE are bit larger.
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spelling doaj.art-08178f95ce964b5ea8a534baec1a86782022-12-21T19:43:39ZengSpringerOpenJournal of High Energy Physics1029-84792020-06-012020613110.1007/JHEP06(2020)094Prospects of light sterile neutrino searches in long-baseline neutrino oscillationsYakefu Reyimuaji0Chun Liu1CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of SciencesCAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of SciencesAbstract The neutrino oscillation probabilities in vacuum and matter are discussed, considering the framework of three active and one light sterile neutrinos. We study in detail the rephasing invariants and CP asymmetry observables, and investigate the four-neutrino oscillations in long-baseline neutrino experiments, such as DUNE, NOνA and T2HK. Our results show that the matter effect enhances quite a significantly the oscillation probabilities of electron neutrino and electron antineutrino appearance channels within a certain energy range, while no considerable change arises in the CP asymmetry analysis due to the matter effect. Moreover, separation between the results with and without the sterile neutrino is not so significant and that is also affected by CP-violating phases. Comparing the results for these three experiments, all of them have similar features, nevertheless, sizes and separations of the oscillation probabilities in DUNE are bit larger.http://link.springer.com/article/10.1007/JHEP06(2020)094Beyond Standard ModelNeutrino Physics
spellingShingle Yakefu Reyimuaji
Chun Liu
Prospects of light sterile neutrino searches in long-baseline neutrino oscillations
Journal of High Energy Physics
Beyond Standard Model
Neutrino Physics
title Prospects of light sterile neutrino searches in long-baseline neutrino oscillations
title_full Prospects of light sterile neutrino searches in long-baseline neutrino oscillations
title_fullStr Prospects of light sterile neutrino searches in long-baseline neutrino oscillations
title_full_unstemmed Prospects of light sterile neutrino searches in long-baseline neutrino oscillations
title_short Prospects of light sterile neutrino searches in long-baseline neutrino oscillations
title_sort prospects of light sterile neutrino searches in long baseline neutrino oscillations
topic Beyond Standard Model
Neutrino Physics
url http://link.springer.com/article/10.1007/JHEP06(2020)094
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