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

Gautam Rupak; Akshay Vaghani; Renato Higa; Ubirajara van Kolck

doi:10.1016/j.physletb.2018.08.051

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

Gautam Rupak, Akshay Vaghani, Renato Higa, Ubirajara van Kolck

Physics

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	414-419
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	791
DOIs	https://doi.org/10.1016/j.physletb.2018.08.051
State	Published - Apr 10 2019

Keywords

Efimov levels
Neutron–deuteron scattering
Nuclear effective field theory

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2018.08.051

Cite this

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title = "Fate of the neutron–deuteron virtual state as an Efimov level",

abstract = "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.",

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author = "Gautam Rupak and Akshay Vaghani and Renato Higa and {van Kolck}, Ubirajara",

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T1 - Fate of the neutron–deuteron virtual state as an Efimov level

AU - Rupak, Gautam

AU - Vaghani, Akshay

AU - Higa, Renato

AU - van Kolck, Ubirajara

PY - 2019/4/10

Y1 - 2019/4/10

N2 - 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.

AB - 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.

KW - Efimov levels

KW - Neutron–deuteron scattering

KW - Nuclear effective field theory

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

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Keywords

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