Can one measure nuclear matrix elements of neutrinoless double beta decay?

Details Can one measure nuclear matrix elements of neutrinoless double beta decay? Can one measure nuclear matrix elements of neutrinoless double beta decay?

2009-06-09

arxiv.org/abs/0906.1759v2

Phys.Rev.C80:041302,2009

Physics

Nuclear Physics

Nuclear Theory

4 pages, to be published in Physical Review C

Scientific paper

10.1103/PhysRevC.80.041302

By making use of the isospin conservation by strong interaction, the Fermi $0\nu\beta\beta$ nuclear matrix element $M_{F}^{0\nu}$ is transformed to acquire the form of an energy-weighted double Fermi transition matrix element. This useful representation allows reconstruction of the total $M_{F}^{0\nu}$ provided a small isospin-breaking Fermi matrix element between the isobaric analog state in the intermediate nucleus and the ground state of the daughter nucleus could be measured, e.g. by charge-exchange reactions. Such a measurement could set a scale for the $0\nu\beta\beta$ nuclear matrix elements and help much to discriminate between different nuclear structure models in which calculated $M_{F}^{0\nu}$ may differ by as much as the factor of 5.

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