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

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, , Citation J. Carbonell et al 2020 J. Phys.: Conf. Ser. 1643 012120 DOI 10.1088/1742-6596/1643/1/012120

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carbonell@ipno.in2p3.fr

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1 Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France

2 Department of Physics, Kyushu University, Fukuoka, 819-0395, Japan

3 RIKEN Nishina Center, Wako 351-0198 Japan

4 IPHC, IN2P3-CNRS/Université de Strasbourg BP 28, F-67037 Strasbourg Cedex 2, France

5 LPC Caen, Univ. Normandie, ENSICAEN, Univ. Caen, CNRS/IN2P3, 14050 Caen, France

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1742-6596/1643/1/012120

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 19 B 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.

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10.1088/1742-6596/1643/1/012120