Abstract
We present the first missing mass spectrum of the unbound nucleus , measured at RIKEN using the reaction at 50A MeV. is believed to be a three-body resonance beyond the limit of nuclear binding. Our observation of a new decay branch, , and of a puzzling reduction of the cross section challenges this view. Moreover, our experiment shows a new trend in the evolution of the proton spectroscopic strength in Li isotopes deduced from the comparison of the cross sections on with theoretical predictions. We discuss new questions about physics beyond the limits of nuclear existence raised by these findings.
- Received 11 June 2014
- Revised 9 March 2015
- Corrected 14 October 2015
DOI:https://doi.org/10.1103/PhysRevC.92.041302
©2015 American Physical Society
Corrections
14 October 2015