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Advances in High Energy Physics
Volume 2016, Article ID 7486712, 8 pages
Research Article

An Effective Method to Accurately Calculate the Phase Space Factors for Decay

Department of Physics, Central Michigan University, Mount Pleasant, MI 48859, USA

Received 21 December 2015; Accepted 28 March 2016

Academic Editor: Aurelio Juste

Copyright © 2016 Andrei Neacsu and Mihai Horoi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


Accurate calculations of the electron phase space factors are necessary for reliable predictions of double-beta decay rates and for the analysis of the associated electron angular and energy distributions. We present an effective method to calculate these phase space factors that takes into account the distorted Coulomb field of the daughter nucleus, yet it allows one to easily calculate the phase space factors with good accuracy relative to the most exact methods available in the recent literature.