Analysis of simulated data for the KArlsruhe TRItium Neutrino experiment using Bayesian inference

Riis, A. Sejersen; Hannestad, Steen; Weinheimer, C.

doi:10.1103/physrevc.84.045503

Cited by 20 publications

(24 citation statements)

References 24 publications

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“…To estimate the sensitivity of PTOLEMY to the neutrino mass scale we follow and adapt the procedure proposed in the KATRIN Design Report [18] and revisited from the Bayesian point of view in [95], see also [96]. We consider here in detail the standard active neutrino states, but the analysis can be easily extended to include an extra sterile state with mass in the eV range, see section 7.…”

Section: Data Analysis Methodsmentioning

confidence: 99%

Neutrino physics with the PTOLEMY project: active neutrino properties and the light sterile case

Betti

Biasotti

Boscá

et al. 2019

J. Cosmol. Astropart. Phys.

163

177

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The PTOLEMY project aims to develop a scalable design for a Cosmic Neutrino Background (CNB) detector, the first of its kind and the only one conceived that can look directly at the image of the Universe encoded in neutrino background produced in the first second after the Big Bang. The scope of the work for the next three years is to complete the conceptual design of this detector and to validate with direct measurements that the nonneutrino backgrounds are below the expected cosmological signal. In this paper we discuss in details the theoretical aspects of the experiment and its physics goals. In particular, we mainly address three issues. First we discuss the sensitivity of PTOLEMY to the standard neutrino mass scale. We then study the perspectives of the experiment to detect the CNB via neutrino capture on tritium as a function of the neutrino mass scale and the energy resolution of the apparatus. Finally, we consider an extra sterile neutrino with mass in the eV range, coupled to the active states via oscillations, which has been advocated in view of neutrino oscillation anomalies. This extra state would contribute to the tritium decay spectrum, and its properties, mass and mixing angle, could be studied by analyzing the features in the beta decay electron spectrum.

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Section: Data Analysis Methodsmentioning

confidence: 99%

Neutrino physics with the PTOLEMY project: active neutrino properties and the light sterile case

Betti

Biasotti

Boscá

et al. 2019

J. Cosmol. Astropart. Phys.

163

177

View full text Add to dashboard Cite

show abstract

“…The first experiment we will comment on is KATRIN, which has recently started operations and aims at a detection of the effective electron antineutrino mass with a sensitivity of 0.2 eV [76,77]. The first results from KATRIN are expected in early 2019, but the final target statistics will be reached after 3 yr of data taking.…”

Section: B Prospects From Beta-decay Experimentsmentioning

confidence: 99%

Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects

Salas

Gariazzo

Mena

et al. 2018

Front. Astron. Space Sci.

194

197

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The ordering of the neutrino masses is a crucial input for a deep understanding of flavor physics, and its determination may provide the key to establish the relationship among the lepton masses and mixings and their analogous properties in the quark sector. The extraction of the neutrino mass ordering is a data-driven field expected to evolve very rapidly in the next decade. In this review, we both analyze the present status and describe the physics of subsequent prospects. Firstly, the different current available tools to measure the neutrino mass ordering are described. Namely, reactor, long-baseline (accelerator and atmospheric) neutrino beams, laboratory searches for beta and neutrinoless double beta decays and observations of the cosmic background radiation and the large scale structure of the universe are carefully reviewed. Secondly, the results from an up-to-date comprehensive global fit are reported: the Bayesian analysis to the 2018 publicly available oscillation and cosmological data sets provides strong evidence for the normal neutrino mass ordering versus the inverted scenario, with a significance of 3.5 standard deviations. This preference for the normal neutrino mass ordering is mostly due to neutrino oscillation measurements. Finally, we shall also emphasize the future perspectives for unveiling the neutrino mass ordering. In this regard, apart from describing the expectations from the aforementioned probes, we also focus on those arising from alternative and novel methods, as 21 cm cosmology, core-collapse supernova neutrinos and the direct detection of relic neutrinos.10 Here, σ 8 corresponds to the normalization of the matter power spectrum on scales of 8h −1 Mpc, see Equation (13). 11 The thermal SZ thermal effect consists on a spectral distortion on CMB photons which arrive along the line of sight of a cluster.

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“…The main physics goal is to determine the value of the absolute neutrino mass if it lies above 0.35 eV, or to set strong limits going down to 0.2 eV, improving current direct constraints by an order of magnitude. The possible presence of exotic charged current interactions in direct neutrino mass experiments (see [6,7] for reviews) has often been analyzed [8][9][10][11][12][13][14][15][16][17]. The outcome of such investigations is that with studies near the endpoint of the spectrum existing limits on exotic interactions cannot be much improved.…”

Section: Introductionmentioning

confidence: 99%

Direct neutrino mass experiments and exotic charged current interactions

Ludl

Rodejohann

2016

J. High Energ. Phys.

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We study the effect of exotic charged current interactions on the electron energy spectrum in tritium decay, focussing on the KATRIN experiment and a possible modified setup that has access to the full spectrum. Both sub-eV and keV neutrino masses are considered. We perform a fully relativistic calculation and take all possible new interactions into account, demonstrating the possible sizable distortions in the energy spectrum. ‡

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Analysis of simulated data for the KArlsruhe TRItium Neutrino experiment using Bayesian inference

Cited by 20 publications

References 24 publications

Neutrino physics with the PTOLEMY project: active neutrino properties and the light sterile case

Neutrino physics with the PTOLEMY project: active neutrino properties and the light sterile case

Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects

Direct neutrino mass experiments and exotic charged current interactions

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