Another possible way to determine the neutrino mass hierarchy

By H. Nunokawa, S. Parke, R. Funchal. 2005

202 citations recorded by the source corpus.

We show that by combining high precision measurements of the atmospheric $\ensuremath{\delta}{m}^{2}$ in both the electron and muon neutrino (or antineutrino) disappearance channels one can determine the neutrino mass hierarchy. The required precision is a very challenging fraction of one per cent for both measurements. At even higher precision, sensitivity to the cosine of the $CP$ violating phase is also possible. This method for determining the mass hierarchy of the neutrino sector does not depend on matter effects.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/54ba60e35b2fe98b919e7cc5ee49bed35191458d

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In Nuclear and High Energy Physics

Citations in the corpus

The fate of hints: updated global analysis of three-flavor neutrino oscillations (2020, background): “This is so because relevant additional information on the mass ordering can be obtained from the comparison of νμ and νe disappearance spectral data [22, 23].”
Invited review: Physics potential of the ICAL detector at the India-based Neutrino Observatory (INO) (2015, background): “Here ∆m(2)eff ≡ ∆m(2)32 − (cos(2) θ12 − cos δCP sin θ32 sin 2θ12 tan θ23)∆m(2)21 is the effective value of ∆m(2)atm relevant for the two-neutrino analysis of atmospheric neutrino oscillations [6, 7].”
Global analysis of three-flavour neutrino oscillations: synergies and tensions in the determination of θ23, δCP, and the mass ordering (2018, background): “[43, 47]: the νμ disappearance probability is symmetric with respect to the sign of ∆m(2)μμ given in eq.”
NuFit-6.0: updated global analysis of three-flavor neutrino oscillations (2024, unknown): “As in previous analyses, the combination of ν µ and ¯ ν µ disappearance data (dominated by LBL accelerator experiments) with ¯ ν e disappearance from reactors provides complementary information, which is especially relevant for the MO discrimination [40, 41].”
2020 global reassessment of the neutrino oscillation picture (2020, background): “§ Actually, short-baseline reactor experiments are sensitive to the effective mass splitting ∆mee = cos 2 θ12∆m 2 31 + sin θ12∆m 2 32 [51].”
Updated constraints on non-standard interactions from global analysis of oscillation data (2018, background): “[34] it was shown that, in the limit ∆m21 ∆m31 as indicated by the data, the Pμμ probability relevant for LBL-disappearance experiments can be accurately described in terms of a single effective mass parameter ∆mμμ = ∆m31− r2∆m 2 21 with r2 = |Uvac μ2 |2 / (|Uvac μ1 |2+|Uvac μ2 |2).”