Fate of the neutron–deuteron virtual state as an Efimov level
| Autor: | Akshay Vaghani, Renato Higa, Gautam Rupak, Ubirajara van Kolck |
|---|---|
| Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Nuclear and High Energy Physics
Particle physics Nuclear Theory [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] FOS: Physical sciences 01 natural sciences Nuclear Theory (nucl-th) 0103 physical sciences Bound state Effective field theory Neutron 010306 general physics Nuclear Experiment Physics Condensed Matter::Quantum Gases Unitarity Nuclear effective field theory Efimov levels 010308 nuclear & particles physics Scattering lcsh:QC1-999 Virtual state Deuterium Excited state Neutron–deuteron scattering lcsh:Physics |
| Zdroj: | Physics Letters Phys.Lett.B Phys.Lett.B, 2019, 791, pp.414-419. ⟨10.1016/j.physletb.2018.08.051⟩ Physics Letters B Physics Letters B, Elsevier, 2019, 791, pp.414-419. ⟨10.1016/j.physletb.2018.08.051⟩ Physics Letters B, Vol 791, Iss, Pp 414-419 (2019) |
| ISSN: | 0370-2693 |
| DOI: | 10.1016/j.physletb.2018.08.051⟩ |
| Popis: | The emergence of Efimov levels in a three-body system is investigated near the unitarity limit characterized by resonating two-body interaction. No direct evidence of Efimov levels is seen in the three-nucleon system since the triton is the only physical bound state. We provide a model-independent analysis of nucleon-deuteron scattering at low energy by formulating a consistent effective field theory. We show that virtual states evolve into shallow bound states, which emerge as excited triton levels as we drive the system towards unitarity. Even though we consider this specific system, our results for the emergence of the Efimov levels are universal. Comment: 7 pages, 3 figures |
| Databáze: | OpenAIRE |
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