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PUMA, antiProton unstable matter annihilation

2022; Springer Science+Business Media; Volume: 58; Issue: 5 Linguagem: Inglês

10.1140/epja/s10050-022-00713-x

1434-601X

T. Aumann, W. Bartmann, Oliver Boine‐Frankenheim, A Bouvard, A. Broche, F. Butin, D. Calvet, J. Carbonell, Paolo Chiggiato, Herbert De Gersem, R. de Oliveira, T. Dobers, Felix Ehm, J. Ferreira Somoza, J. Fischer, M. Fraser, E. Friedrich, A. Frotscher, M. Gómez-Ramos, Jean-Louis Grenard, A. Hobl, Guillaume Hupin, A. Husson, P. Indelicato, K. Johnston, C. Klink, Y. Kubota, Rimantas Lazauskas, S. Malbrunot-Ettenauer, Nicolas Marsic, W. F. O Müller, S. Naimi, N. Nakatsuka, Rene Necca, D. Neidherr, G. Neyens, A. Obertelli, Yusuke Ono, Sergio Pasinelli, N. Paul, E. Pollacco, D. Rossi, H. Scheit, M. Schlaich, Alexander Schmidt, L. Schweikhard, R. Seki, S. Sels, E. Siesling, T. Uesaka, M. Vilén, M. Wada, F. Wienholtz, S. Wycech, Sónia Zacarias,

Atomic and Molecular Physics

We explore the description of the bound $^{19}$B isotope in terms of a $^{17}$B+n+n three-body system where the two-body subsystems $^{17}$B+n and neutron-neutron (nn) have virtual states close to the continuum. Dimensionless scaling functions for the root-mean-square (rms) radii are defined and studied for different parameters of the neutron-core potential and considering three different models for neutron-neutron interaction. The scaling functions for the radii are rooted on the universal behavior of three-body systems close to the Efimov limit and depend only on dimensionless quantities formed by the two-neutron separation energies and scattering lengths. Our results show in practice the model independence of these scaling functions close to unitarity. We provide an estimation of the different rms relative separation distances between the constituents, as well as of the proton and matter radii.