Abstract
Searches for Lorentz violation were recently extended to the weak sector, in particular neutron and nuclear decay [Noordmans, Wilschut, and Timmermans, Phys. Rev. C 87, 055502 (2013)]. From experiments on forbidden -decay transitions, strong limits in the range of to were obtained on Lorentz-violating components of the -boson propagator [Noordmans, Wilschut, and Timmermans, Phys. Rev. Lett. 111, 171601 (2013)]. In order to improve on these limits, strong sources have to be considered. In this Brief Report we study isotopes that undergo orbital electron capture and allow experiments at high decay rates and low dose. We derive the expressions for the Lorentz-violating differential decay rate and discuss the options for competitive experiments and their required precision.
- Received 15 January 2015
- Revised 12 February 2015
DOI:https://doi.org/10.1103/PhysRevC.91.038501
©2015 American Physical Society