Year: 2026
Type: article
Abstract: Nuclear interactions play a key role for the stability of atomic nuclei and stellar environments. Successful parametrization and models of these interactions, developed in the last decades, accurately reproduce all the proton and neutron scattering data, besides the properties of few-body nuclear systems. However, recent electron scattering results focusing on the first excited resonant state of 4 He nucleus, reveal a puzzling situation suggesting potential gaps in our understanding of the nuclear phenomenology. Here, we report a study of such 4 He resonance by 4 He + 4 He scattering featuring data of unprecedented sensitivity and state-of-art analyses of the spectral line shape together with a phenomenological reaction modeling that incorporates the same nuclear densities employed in electron-scattering studies. Our analysis of the full set of experimental observables yields a reasonable description within the framework of current nuclear-interaction physics, thereby highlighting the need for further advancing the modeling of few-body open quantum systems.
Source: Nature Communications
Authors: F. Cappuzzello, V. Soukeras, S. Bacca, D. Carbone, M. Cavallaro, L. C. Chamon, I. Lombardo, G. Orlandini, M. Viviani, C. Agodi, H. -W. Becker, G. A. Brischetto, S. Calabrese, C. Ciampi, M. Cicerchia, M. Cinausero, I. Ciraldo, D. Dell’Aquila, M. Fisichella, C. Frosin, A. Hacisalihoglu, M. Hilcker, A. Kievsky, Y. Kucuk, T. Marchi, O. Sgouros, A. Spatafora, D. Torresi, M. Vigilante, A. Yildirim
Institutions: University of Catania, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Johannes Gutenberg University Mainz, Helmholtz Institute Mainz, Universidade de São Paulo, Istituto Nazionale di Fisica Nucleare, Sezione di Catania, University of Trento, Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And Applications, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Ruhr University Bochum, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, University of Padua, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, University of Naples Federico II, Karadeniz Technical University, Technische Universität Darmstadt, Akdeniz University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,990
OpenAlex ID: W7166173857
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