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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, and Stefan Schwarz
Phys. Rev. C 86, 041306(R) – Published 31 October 2012

Abstract

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 et al. [Nucl. Phys. A 729, 337 (2003)], provides a new determination of the 48Ca ββ-decay Q value: Qββ = 4262.96(84) keV.

  • Figure
  • Figure
  • Received 19 September 2012

DOI:https://doi.org/10.1103/PhysRevC.86.041306

©2012 American Physical Society

Authors & Affiliations

Matthew Redshaw1,2,*, Georg Bollen1,3, Maxime Brodeur1, Scott Bustabad1,3, David L. Lincoln1,3, Samuel J. Novario1,3, Ryan Ringle1, and Stefan Schwarz1

  • 1National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
  • 2Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA
  • 3Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA

  • *redsh1m@cmich.edu

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Vol. 86, Iss. 4 — October 2012

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