Atomic mass and double-β-decay Q value of 48Ca

Matthew Redshaw, Georg Bollen, Maxime Brodeur, Scott Bustabad, David L. Lincoln, Samuel J. Novario, Ryan Ringle, Stefan Schwarz

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


The possibility of detecting neutrinoless double-β-decay (0νββ-decay) in experiments that are currently in operation or under development provides the exciting opportunity to determine the Dirac or Majorana nature of the neutrino and its absolute mass scale. An important datum for interpreting 0νββ-decay experimental results is the Q value of the decay. Using Penning trap mass spectrometry we have measured the atomic mass of 48Ca to be M[48Ca] = 47.952 522 76(21) u which, combined with the mass of 48Ti evaluated by Audi, provides a new determination of the 48Ca ββ-decay Q value: Qββ = 4262.96(84) keV.

Original languageEnglish
Article number041306
JournalPhysical Review C - Nuclear Physics
Issue number4
StatePublished - Oct 31 2012


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