19B isotope as a 17B-n-n three-body cluster close to unitary limit

Abstract

We describe 19B in terms of a 17B-n-n three-body system, where the two-body subsystems 17B-n and n-n are unbound (virtual) states close to the unitary limit. The energy of 19B ground state is well reproduced and two low-lying resonances are predicted. Their eventual link with the Efimov physics is discussed. This model can be extended to describe the recently discovered resonant states in 20,21B.

27th International Nuclear Physics Conference (INPC2019). arXiv admin note: substantial text overlap with arXiv:1912.05427

References in corpus (3)

• Can realistic nuclear interactions tolerate a resonant tetraneutron ?
• First observation of 20B and 21B
• Ab initio calculations of 5H resonant states