Double beta decay searches of Xe-134, Xe-126 and Xe-124 with large scale Xe detectors

Understand

The sensitivity for double beta decay studies of Xe-134 and Xe-124 is investigated assuming a potential large scale Xe experiment developed for dark matter searches depleted in Xe-136.

• The opportunity for an observation of the 2nu double beta decay of Xe-134 is explored for various scenarios.
• A positive observation should be possible for all calculated nuclear matrix elements.
• The detection of 2$\nu$ ECEC of Xe-124 can be probed in all scenarios covering the theoretical predicted half-life uncertainties and a potential search for Xe-126 is discussed.