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A new route for neutrino mass determination using the electron capture of 194Hg

D. Beck K. Blaum C. Böhm M. Breitenfeldt S. Eliseev V. Fedoseev S. George F. Herfurth A. Herlert M. Kowalska D. Lunney 1 S. Naimi 1 D. Neidherr Y. Novikov S. Schwarz L. Schweikhard M. Seliverstov K. Zuber
CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609, CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
Abstract : The electron neutrino mass is of highest importance for many fields of physics. To measure the neutrino mass, beta-decay spectra are typically used. Here an alternative way to determine the neutrino mass, using an electron capture in 194Hg will be presented. Direct mass measurements of 194Hg and its daughter nucleus 194Au were performed at the high-precision Penning trap mass spectrometer ISOLTRAP at the ISOLDE facility (CERN). The QEC-value obtained by the mass difference of these nuclei leads to the conclusion that the K-capture is forbidden, thus an L-capture is assumed. For further investigations a measurement using a cryogenic micro-calorimeter is suggested. From this, a de-excitation spectrum is obtained which can be compared to the QEC-value in order to determine the neutrino mass.
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Submitted on : Thursday, December 6, 2012 - 4:26:14 PM
Last modification on : Wednesday, September 16, 2020 - 5:42:22 PM


  • HAL Id : in2p3-00762222, version 1



D. Beck, K. Blaum, C. Böhm, M. Breitenfeldt, S. Eliseev, et al.. A new route for neutrino mass determination using the electron capture of 194Hg. Deutche Physikalische Gesellschaft (DPG) Spring meeting of the Atomic and Molecular Physics section, Mar 2010, Hannover, Germany. ⟨in2p3-00762222⟩



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