Abstract
Large calorimetric neutrino mass experiments using thermal detectors are possibly going to play a crucial role in the challenge for assessing the neutrino mass. This paper describe a tool based on Monte Carlo methods which has been developed to estimate the statistical sensitivity of calorimetric neutrino mass experiments using the 163-Ho electron capture decay. The tool is applied to investigate the effect of various experimental parameters and the results useful for designing an experiment with sub-eV sensitivity are given.
Highlights
IntroductionOne of the challenges for particle physics in decade will be to probe the neutrino absolute mass down to at least the lowest bound of the inverted hierarchy region, i.e. about 0.05 eV [1]
One of the challenges for particle physics in decade will be to probe the neutrino absolute mass down to at least the lowest bound of the inverted hierarchy region, i.e. about 0.05 eV [1].Present best limits on the neutrino absolute mass have been set using MAC-E filter spectrometers to analyze the end-point of 3H beta decay [2,3] and are about 2 eV
In a couple of years the new large MAC-E filter spectrometer of the KATRIN experiment will become operational with the aim to push the sensitivity to neutrino absolute mass down to about 0.2 eV [4]
Summary
One of the challenges for particle physics in decade will be to probe the neutrino absolute mass down to at least the lowest bound of the inverted hierarchy region, i.e. about 0.05 eV [1]. Present best limits on the neutrino absolute mass have been set using MAC-E filter spectrometers to analyze the end-point of 3H beta decay [2,3] and are about 2 eV. In a couple of years the new large MAC-E filter spectrometer of the KATRIN experiment will become operational with the aim to push the sensitivity to neutrino absolute mass down to about 0.2 eV [4]. With KATRIN, this experimental approach reaches its technical limits. It is mandatory for the neutrino physics community to define alternative and complementary experimental methodologies to extend the reach of direct neutrino mass measurements
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