Fate of the neutron-deuteron virtual state as an Efimov level

Autor(es)

Rupak, Gautam ^{[1, 2]} ; Vaghani, Akshay ^{[1, 2]} ; Higa, Renato ^[3] ; van Kolck, Ubirajara ^{[4, 5]}

Afiliação do(s) autor(es)

^[1] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 - USA

^[2] Mississippi State Univ, Ctr Computat Sci HPC2, Mississippi State, MS 39762 - USA

^[3] Univ Sao Paulo, Inst Fis, R Matao 1371, BR-05508090 Sao Paulo, SP - Brazil

^[4] Univ Arizona, Dept Phys, Tucson, AZ 85721 - USA

^[5] Univ Paris Saclay, Univ Paris Sud, CNRS IN2P3, Inst Phys Nucl, F-91406 Orsay - France

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters B; v. 791, p. 414-419, APR 10 2019.
• Citações Web of Science: 1

Resumo

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. (AU)

• Processo FAPESP: 12/50984-4 - Física de hádrons
• Beneficiário: Fernando Silveira Navarra
• Modalidade de apoio: Auxílio à Pesquisa - Temático