Predictions for neutrinoless double-beta decay in the 3+1 sterile neutrino scenario

Giunti, C.; Zavanin, E. M.

doi:10.1007/jhep07(2015)171

Cited by 44 publications

(42 citation statements)

References 154 publications

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“…These unknown complex phases can generate cancellations between the different mass contributions. Figure 6 shows the range of allowed values of |m ββ | as a function of the lightest neutrino mass in the cases of 3ν and 3+1 mixing with Normal and Inverted Ordering of the three lightest neutrinos [233]. The 3ν mixing parameters are those in Tab.…”

Section: Neutrinoless Double-β Decaymentioning

confidence: 99%

Light sterile neutrinos

Gariazzo

Giunti

Laveder

et al. 2015

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

224

336

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Abstract. The theory and phenomenology of light sterile neutrinos at the eV mass scale is reviewed. The reactor, Gallium and LSND anomalies are briefly described and interpreted as indications of the existence of short-baseline oscillations which require the existence of light sterile neutrinos. The global fits of short-baseline oscillation data in 3+1 and 3+2 schemes are discussed, together with the implications for β-decay and neutrinoless double-β decay. The cosmological effects of light sterile neutrinos are briefly reviewed and the implications of existing cosmological data are discussed. The review concludes with a summary of future perspectives.

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Section: Neutrinoless Double-β Decaymentioning

confidence: 99%

Light sterile neutrinos

Gariazzo

Giunti

Laveder

et al. 2015

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

224

336

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“…4 allows two possible orderings of the neutrino masses [6]. Using the same notation of [7], ( 22 ± 62) × 10 −3 eV [4,5] a first scheme, denoted the Normal Hierarchy (NH), corresponds to…”

Section: Effective Majorana Massmentioning

confidence: 99%

“…This is normally done via a χ 2 analysis [7], where the uncertainties on the mixing angles θ 12 and θ 13 , and on the squared mass differences δm 2 ☼ and m 2 atm are propagated, while the values of the Majorana phases leading to the largest and smallest |m ββ | are considered. As a result, the 1σ , 2σ , and 3σ allowed regions are typically shown (e.g.…”

Section: Effective Mass Versus Lightest Neutrino Massmentioning

confidence: 99%

“…Fig. 3 of [7]), but no clear information as regards the relative probability of different |m ββ | values for a fixed m min is provided. This can become of dramatic importance in the case future experiments prove that nature chose the NH regime.…”

Section: Effective Mass Versus Lightest Neutrino Massmentioning

confidence: 99%

“…The thresholds on correspond to the lower bounds mentioned above, while the horizontal shading for > 10 −1 eV comes from the cosmological bound. In NH case, the vertical shading for ∈ [6,7] × 10 −2 eV and |m ββ | < 10 −3 eV is related to the combination of the Majorana phases, as explained in Sect. 3.…”

Section: How Does Cosmology Affect 0νββ Decay Search?mentioning

confidence: 99%

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Effective Majorana mass and neutrinoless double beta decay

Benato

2015

Eur. Phys. J. C

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The probability distribution for the effective Majorana mass as a function of the lightest neutrino mass in the standard three neutrino scheme is computed via a random sampling from the distributions of the involved mixing angles and squared mass differences. A flat distribution in the [0, 2π ] range for the Majorana phases is assumed, and the dependence of small values of the effective mass on the Majorana phases is highlighted. The study is then extended with the addition of the cosmological bound on the sum of the neutrino masses. Finally, the prospects for 0νββ decay search with 76 Ge, 130 Te and 136 Xe are discussed, as well as those for the measurement of the electron neutrino mass.

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Light sterile neutrino sensitivity of 163Ho experiments

Gastaldo

Giunti

Zavanin

2016

J. High Energ. Phys.

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Abstract:We explore the sensitivity of 163 Ho electron capture experiments to neutrino masses in the standard framework of three-neutrino mixing and in the framework of 3+1 neutrino mixing with a sterile neutrino which mixes with the three standard active neutrinos, as indicated by the anomalies found in short-baseline neutrino oscillations experiments. We calculate the sensitivity to neutrino masses and mixing for different values of the energy resolution of the detectors, of the unresolved pileup fraction and of the total statistics of events, considering the expected values of these parameters in the two planned stages of the ECHo project (ECHo-1k and ECHo-1M). We show that an extension of the ECHo-1M experiment with the possibility to collect 10 16 events will be competitive with the KATRIN experiment. This statistics will allow to explore part of the 3+1 mixing parameter space indicated by the global analysis of short-baseline neutrino oscillation experiments. In order to cover all the allowed region, a statistics of about 10 17 events will be needed.

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Predictions for neutrinoless double-beta decay in the 3+1 sterile neutrino scenario

Cited by 44 publications

References 154 publications

Light sterile neutrinos

Light sterile neutrinos

Effective Majorana mass and neutrinoless double beta decay

Light sterile neutrino sensitivity of 163Ho experiments

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