163Ho based experiments

Gastaldo, L.

doi:10.1063/1.4915556

Cited by 2 publications

(3 citation statements)

References 23 publications

(36 reference statements)

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“…Previous analyses of the sensitivity of 163 Ho experiments with various configurations have been presented in refs. [99,[116][117][118].…”

Section: ν Mixingmentioning

confidence: 99%

“…We indicate the sum of all the energy released in the electron capture process minus the one taken away by the neutrino as E c . This is the quantity that is measured by calorimetric techniques in modern experiments studying the 163 Ho decay [99]. The concept of these experiments was initially proposed more then thirty year ago by De Rujula and Lusignoli [100,101].…”

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confidence: 99%

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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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“…Previous analyses of the sensitivity of 163 Ho experiments with various configurations have been presented in refs. [99,[116][117][118].…”

Section: ν Mixingmentioning

confidence: 99%

mentioning

confidence: 99%

Light sterile neutrino sensitivity of 163Ho experiments

Gastaldo

Giunti

Zavanin

2016

J. High Energ. Phys.

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“…The efforts to improve calorimetrical measurements of the 163 Ho EC spectra, including production and purification of the 163 Ho source, were recently reviewed in ref. [159].…”

Section: New Approaches 361 Echomentioning

confidence: 99%

Constraints on the Active and Sterile Neutrino Masses from Beta-Ray Spectra: Past, Present and Future1

Dragoun¹,

Vénos²

2016

PHY

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Abstract:Although neutrinos are probably the most abundant fermions of the universe their mass is not yet known. Oscillation experiments have proven that at least one of the neutrino mass states has m i > 0.05 eV while various interpretations of cosmological observations yielded an upper limit for the sum of neutrino masses ∑m i < (0.14 -1.7) eV. The searches for the yet unobserved 0νββ decay result in an effective neutrino mass m ββ < (0.2 -0.7) eV. The analyses of measured tritium β-spectra provide an upper limit for the effective electron neutrino mass m(v e ) < 2 eV. In this review, we summarize the experience of two generations of β-ray spectroscopists who improved the upper limit of m(v e ) by three orders of magnitude. We describe important steps in the development of radioactive sources and electron spectrometers, and recapitulate the lessons from now-disproved claims for the neutrino mass of 30 eV and the 17 keV neutrino with an admixture larger than 0.03%. We also pay attention to new experimental approaches and searches for hypothetical sterile neutrinos.

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163Ho based experiments

Cited by 2 publications

References 23 publications

Light sterile neutrino sensitivity of 163Ho experiments

Light sterile neutrino sensitivity of 163Ho experiments

Constraints on the Active and Sterile Neutrino Masses from Beta-Ray Spectra: Past, Present and Future1

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