Journal
PHYSICS LETTERS B
Volume 791, Issue -, Pages 414-419Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2018.08.051
Keywords
Efimov levels; Neutron-deuteron scattering; Nuclear effective field theory
Funding
- Institute for Nuclear Theory at the University of Washington
- Joint Institute for Nuclear Physics and Applications at Oak Ridge National Laboratory
- FAPESP [2012/50984-4, 464898/2014-5]
- U.S. NSF [PHY-1615092]
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-FG02-04ER41338]
- European Union Research and Innovation program Horizon 2020 [654002]
- CNRS's Laboratoire International Associe France-Bresil
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [12/50984-4] Funding Source: FAPESP
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The emergence of Efimov levels in a three-body system is investigated near the unitarity limit characterized by a resonant 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. (C) 2018 The Author(s). Published by Elsevier B.V.
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