Author/Authors :
Sisti، نويسنده , , M and Arnaboldi، نويسنده , , C and Brofferio، نويسنده , , C and Ceruti، نويسنده , , G and Cremonesi، نويسنده , , O and Fiorini، نويسنده , , E and Giuliani، نويسنده , , A and Margesin، نويسنده , , B and Martensson، نويسنده , , L and Nucciotti، نويسنده , , A and Pavan، نويسنده , , M and Pessina، نويسنده , , G and Pirro، نويسنده , , S and Previtali، نويسنده , , E and Soma، نويسنده , , L and Zen، نويسنده , , M، نويسنده ,
Abstract :
In the Standard Model of electroweak interactions an important input parameter is still missing: the absolute value of the mass of one of the neutrinos. In this paper we report the final results of the Milano electron anti-neutrino mass experiment after having measured for about one year the beta spectrum of 187Re with 10 AgReO4 microcalorimeters. We describe the experimental set-up, the detector performance and the measuring conditions. We present the updated limit on the electron anti-neutrino mass which is the most stringent so far obtained with thermal detectors. We also give the most precise estimates for the 187Re transition energy and lifetime.
Keywords :
Neutrino mass , beta decay , 187Re , Thermal detectors
