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arXiv · 1209.5981

Deformation effects on the Gamow-Teller strength distributions in the double-beta decay partners 76Ge and 76Se

P. Sarriguren
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Abstract

A theoretical approach based on a deformed quasiparticle random phase approximation built on a Skyrme selfconsistent mean field is used to describe the recent measurements of the Gamow-Teller GT- strength distribution extracted from the charge-exchange reaction 76Ge(3He,t)76As with high energy resolution. The same analysis is made to describe the Gamow-Teller GT+ strength distribution measured in the 76Se(d,2He)76As reaction. Combining these two branches, the nuclear matrix element for the two-neutrino double-beta decay process is evaluated and compared to experiment. The role of the nuclear deformation on those processes is emphasized and analyzed.

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P. Sarriguren. 2012-09-26. Deformation effects on the Gamow-Teller strength distributions in the double-beta decay partners 76Ge and 76Se. https://doi.org/10.1103/physrevc.86.034335

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