We link the structure of nuclei around Sn100, the heaviest doubly magic nucleus with equal neutron and proton numbers (N=Z=50), to nucleon-nucleon (NN) and three-nucleon (NNN) forces constrained by data of few-nucleon systems. Our results indicate that Sn100 is doubly magic, and we predict its quadrupole collectivity. We present precise computations of Sn101 based on three-particle–two-hole excitations of Sn100, and we find that one interaction accurately reproduces the small splitting between the lowest Jπ=7/2+ and 5/2+ states.Received 21 September 2017Revised 12 January 2018DOI:https://doi.org/10.1103/PhysRevLett.120.152503© 2018 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasBinding energy & massesCollective levelsElectromagnetic transitionsEnergy levels & level densitiesNuclear forcesNuclear many-body theoryNuclear structure & decaysRare & new isotopesNuclear Physics

Structure of the Lightest Tin Isotopes