Universality of the nuclear matrix element governing the mass sector of the decay

O. Civitarese* and J. Suhonen**

* Department of Physics, University of La Plata, C.C.67 (1900) La Plata, Argentina.

** Department of Physics, University of Jyvaskyla, Finland.

Recibido el 25 de enero de 2005
Aceptado el 27 de febrero de 2005

We discuss some features of the nuclear structure elements participant in the calculation of the half–life of the neutrinoless double beta decay. Particularly, we discuss the relationship between the matrix elements governing the two neutrino and zero neutrino modes, to study the degree of correspondence between them.

Keywords: Double beta decay; matrix elements; universality.

Resumen

En esta presentación se discuten diversos aspectos relacionados con la determinación de la masa del neutrino por medio de los límites establecidos para el decaimiento beta doble sin emisión de neutrinos. En particular, se discute la posibilidad de eliminar la dependencia con factores de estructura nuclear de los elementos de matriz involucrados mediante el ajuste de la vida media del modo con emisión de neutrinos.

Descriptores: Decaimiento beta doble; elementos de matriz; universalidad.

PACS: 14.60.Pq; 23.40.Bw; 23.40.Hc

Acknowledgements

This work was partially supported by the CONICET. One of the authors (O.C.) thanks the financial support of the CLAF.

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