Jun 11 – 15, 2018
Villa Monastero
Europe/Zurich timezone

Probing Nuclear Beta-Decay by Heavy Ion Charge Exchange Reactions

Jun 12, 2018, 2:45 PM
Villa Monastero

Villa Monastero

Varenna (Italy)
Nuclear reactions Nuclear reactions


Prof. Horst Lenske (U. Giessen)


Heavy ion charge exchange reactions are of manyfold interest for nuclear reaction and structure physics. A new theoretical approach is presented, emphasizing the role of single and double charge exchange reactions for probing nuclear response functions as encountered in single and double beta decay. In particular, a special class of nuclear double charge exchange (DCE) reactions proceeding as a one-step reaction through a two-body process are shown to involve nuclear matrix elements of the same diagrammatic structure as in $0\nu 2\beta$ decay. These correlated Majorana-DCE reactions are distinct from second order DCE reactions which are characterized the best as sequential double single charge exchange (dSCE) carrying a close resemblance to $0\nu 2\beta$ decay. The results suggest that ion-ion DCE reactions are the ideal testing grounds under well-defined dynamical conditions for investigations of double-beta decay nuclear matrix elements. Comparisons to recent single an double charge exchange data measured by the NUMEN collaboration at the LNS Catania are discussed.

Primary author

Prof. Horst Lenske (U. Giessen)

Presentation materials