2021
DOI: 10.1007/jhep09(2021)162
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Exploring the new physics phases in 3+1 scenario in neutrino oscillation experiments

Abstract: The various global analyses of available neutrino oscillation data indicate the presence of the standard 3 + 0 neutrino oscillation picture. However, there are a few short baseline anomalies that point to the possible existence of a fourth neutrino (with mass in the eV-scale), essentially sterile in nature. Should sterile neutrino exist in nature and its presence is not taken into consideration properly in the analyses of neutrino data, the interference terms arising due to the additional CP phases in presence… Show more

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Cited by 3 publications
(1 citation statement)
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“…Therefore, the effective oscillation probabilities of neutrinos and antineutrinos in short-baseline experiments are equal. There is, however, a difference between the oscillation probabilities of neutrinos and antineutrinos at longer distances, as those of long-baseline experiments [10,[56][57][58][59][60][61][62][63], where the effects of all the complex phases in the mixing matrix are observable. The elements of the fourth column of the mixing matrix must be small, because 3+1 active-sterile neutrino mixing must be a small perturbation of the standard three-neutrino mixing which fits very well the robust data of solar, atmospheric and long-baseline neutrino oscillation experiments [20][21][22].…”
Section: Light Sterile Neutrinosmentioning
confidence: 99%
“…Therefore, the effective oscillation probabilities of neutrinos and antineutrinos in short-baseline experiments are equal. There is, however, a difference between the oscillation probabilities of neutrinos and antineutrinos at longer distances, as those of long-baseline experiments [10,[56][57][58][59][60][61][62][63], where the effects of all the complex phases in the mixing matrix are observable. The elements of the fourth column of the mixing matrix must be small, because 3+1 active-sterile neutrino mixing must be a small perturbation of the standard three-neutrino mixing which fits very well the robust data of solar, atmospheric and long-baseline neutrino oscillation experiments [20][21][22].…”
Section: Light Sterile Neutrinosmentioning
confidence: 99%