Half-life expectations for neutrinoless double beta decay in standard and nonstandard scenarios

Ge, Shao-Feng; Rodejohann, Werner; Zuber, Κ.

doi:10.1103/physrevd.96.055019

Cited by 12 publications

(8 citation statements)

References 51 publications

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“…The additional contribution to the effective mass from sterile neutrinos, |Ue4| 2 m4 |Ue4| 2 ∆m 2 41 , is of the same order of magnitude as the minimal value of the effective mass in the inverted ordering of active neutrinos. It shifts the half-life distribution toward lower values (34); for normal ordering, the shift is toward larger values. The current situation on light sterile neutrinos is confusing (35); most likely, not all hints are correct.…”

Section: Neutrino Mass and Neutrinoless Double-beta Decaymentioning

confidence: 95%

“…Insights can be gained by using oscillation and cosmology data to obtain the probability distribution for m ββ , from which the discovery potential of future experiments can be inferred (32,33,34). Figure 2 shows the "Bayesian discovery probability," which corresponds to the chance of measuring a signal with a significance greater than or equal to 3σ.…”

Section: Neutrino Mass and Neutrinoless Double-beta Decaymentioning

confidence: 99%

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Neutrinoless Double-Beta Decay: Status and Prospects

Dolinski

Poon

Rodejohann

2019

Annu. Rev. Nucl. Part. Sci.

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529

393

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Keywords lepton-number violation, neutrinos, beyond the Standard Model AbstractNeutrinoless double-beta decay is a forbidden, lepton-number-violating nuclear transition whose observation would have fundamental implications for neutrino physics, theories beyond the Standard Model and cosmology. In this review, we summarize the theoretical progress to understand this process, the expectations and implications under various particle physics models, as well as the nuclear physics challenges that affect the precise predictions of the decay half-life. We will also provide a synopsis of the current and future large-scale experiments that aim at discovering this process in physically well-motivated half-life ranges.

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Section: Neutrino Mass and Neutrinoless Double-beta Decaymentioning

confidence: 95%

Section: Neutrino Mass and Neutrinoless Double-beta Decaymentioning

confidence: 99%

Neutrinoless Double-Beta Decay: Status and Prospects

Dolinski

Poon

Rodejohann

2019

Annu. Rev. Nucl. Part. Sci.

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529

393

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“…For the similar analysis relevant for the effective neutrino masses in β and 0νββ decays, see Refs. [29][30][31][32][33][34][35]. Here we perform an updated analysis for the direct neutrino mass experiments, in light of a good number of experimental achievements.…”

Section: Posterior Distributionsmentioning

confidence: 99%

Effective neutrino masses in KATRIN and future tritium beta-decay experiments

2020

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Past and current direct neutrino mass experiments set limits on the so-called effective neutrino mass, which is an incoherent sum of neutrino masses and lepton mixing matrix elements. A classical form of the electron energy spectrum is often assumed. Alternative definitions of effective masses exist, and an exact relativistic spectrum is calculable. We quantitatively compare the validity of those different approximations as function of energy resolution and exposure in view of tritium beta decays in the KATRIN, Project 8 and PTOLEMY experiments. Furthermore, adopting the Bayesian approach, we present the posterior distributions of the effective neutrino masses by including current experimental information from neutrino oscillations, beta decay, neutrinoless double-beta decay and cosmological observations. Both linear and logarithmic priors for the smallest neutrino mass are assumed. *

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“…Although the impact of an eV-mass sterile neutrino on the effective neutrino mass |m ee | has been considered in Refs. [39][40][41][42][43][44][45][46][47], a statistical assessment is still lacking. Therefore, we are motivated to perform a Bayesian analysis of |m ee | in this work by using the global-fit results of neutrino oscillation data and other available information on the absolute neutrino masses.…”

Section: Introductionmentioning

confidence: 99%

Impact of an eV-mass sterile neutrino on the neutrinoless double-beta decays: A Bayesian analysis

Huang

Zhou

2019

Nuclear Physics B

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To quantitatively assess the impact of an eV-mass sterile neutrino on the neutrinoless double-beta (0νββ) decays, we calculate the posterior probability distribution of the relevant effective neutrino mass |m ee | in the (3+1)ν mixing scenario, following the Bayesian statistical approach. The latest global-fit analysis of neutrino oscillation data, the cosmological bound on the sum of three active neutrino masses from Planck, and the constraints from current 0νββ decay experiments are taken into account in our calculations. Based on the resultant posterior distributions, we find that the average value of the effective neutrino mass is shifted from |m ee | = 3.37×10 −3 eV (or 7.71×10 −3 eV) in the standard 3ν mixing scenario to |m ee | = 2.54 × 10 −2 eV (or 2.56 × 10 −2 eV) in the (3+1)ν mixing scenario, with the logarithmically uniform prior on the lightest neutrino mass (or on the sum of three active neutrino masses). Therefore, a null signal from the future 0νββ decay experiment with a sensitivity to |m ee | ≈ O(10 −2 ) eV will be able to set a very stringent constraint on the sterile neutrino mass and the active-sterile mixing angle. *

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Half-life expectations for neutrinoless double beta decay in standard and nonstandard scenarios

Cited by 12 publications

References 51 publications

Neutrinoless Double-Beta Decay: Status and Prospects

Neutrinoless Double-Beta Decay: Status and Prospects

Effective neutrino masses in KATRIN and future tritium beta-decay experiments

Impact of an eV-mass sterile neutrino on the neutrinoless double-beta decays: A Bayesian analysis

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