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Many-Channel Microscopic Model for Resonance Structure in \(^{9}\)Be and \(^{9}\)B: Astrophysical Insights

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Abstract

This study presents a novel many-channel microscopic model to describe high-energy resonance states in \(^9\)Be and \(^9\)B, particularly addressing the cosmological lithium problem. The model integrates multiple three-cluster configurations and binary channels, unveiling 18 resonance states in each nucleus. Significant emphasis is placed on understanding resonance states’ impact on astrophysical S-factors, particularly in reactions involving \(^7\)Li, \(^7\)Be, \(^6\)Li, \(^3\)H, \(^3\)He and a deuteron. The results highlight the influence of resonance states and channel coupling on S-factors, offering new insights into nuclear reactions crucial for cosmological inquiries. This comprehensive analysis bridges theoretical predictions with experimental data, enhancing our understanding of nuclear processes in astrophysical contexts.

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Acknowledgements

This work received partial support from the Program of Fundamental Research of the Physics and Astronomy Department of the National Academy of Sciences of Ukraine (Project No. 0122U000889). We extend our gratitude to the Simons Foundation for their financial support. Additionally, Y.L. acknowledges the National Institute for Nuclear Physics, Italy, for providing a research grant to support Ukrainian scientists.

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  1. Victor Vasilevsky and Victor Zhaba have contributed equally to this work.

Authors and Affiliations

  1. Padova Division, National Institute for Nuclear Physics, Marzolo, 8, Padova, 35131, Italy

    Yuliia Lashko

  2. Bogolyubov Institute for Theoretical Physics, Metrolohichna str.,14-b, Kyiv, 03143, Ukraine

    Yuliia Lashko, Victor Vasilevsky & Victor Zhaba

Authors
  1. Yuliia Lashko
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  2. Victor Vasilevsky
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  3. Victor Zhaba
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Contributions

All authors contributed to the study conception and analysis of the results. Victor Vasilevsky wrote the Fortran code, and Victor Zhaba performed the calculations. Figures were prepared by Victor Vasilevsky and Victor Zhaba. The first draft of the manuscript was written by Yuliia Lashko. All authors have read and approved the final manuscript.

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Correspondence to Yuliia Lashko.

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Lashko, Y., Vasilevsky, V. & Zhaba, V. Many-Channel Microscopic Model for Resonance Structure in \(^{9}\)Be and \(^{9}\)B: Astrophysical Insights. Few-Body Syst 65, 14 (2024). https://doi.org/10.1007/s00601-024-01881-w

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