Unified description of 6Li structure and deuterium-4He dynamics with chiral two- and three-nucleon forces
Abstract
Here, we provide a unified ab initio description of the 6Li ground state and elastic scattering of deuterium (d) on 4He (α) using two- and three-nucleon forces from chiral effective field theory. We analyze the influence of the three-nucleon force and reveal the role of continuum degrees of freedom in shaping the low-lying spectrum of 6Li. The calculation reproduces the empirical binding energy of 6Li, yielding an asymptotic D- to S-state ratio of the 6Li wave function in the d+α configuration of –0.027, in agreement with a determination from 6Li–4He elastic scattering, but overestimates the excitation energy of the 3+ state by 350 keV. The bulk of the computed differential cross section is in good agreement with data. These results endorse the application of the present approach to the evaluation of the 2H(α,γ)6Li radiative capture, responsible for the big-bang nucleosynthesis of 6Li.
- Authors:
-
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- TRIUMF, Vancouver, BC (Canada)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1252618
- Alternate Identifier(s):
- OSTI ID: 1193890
- Report Number(s):
- LLNL-JRNL-665027
Journal ID: ISSN 0031-9007; PRLTAO
- Grant/Contract Number:
- AC52-07NA27344; SCW1158
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 114; Journal Issue: 21; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Hupin, Guillaume, Quaglioni, Sofia, and Navratil, Petr. Unified description of 6Li structure and deuterium-4He dynamics with chiral two- and three-nucleon forces. United States: N. p., 2015.
Web. doi:10.1103/PhysRevLett.114.212502.
Hupin, Guillaume, Quaglioni, Sofia, & Navratil, Petr. Unified description of 6Li structure and deuterium-4He dynamics with chiral two- and three-nucleon forces. United States. https://doi.org/10.1103/PhysRevLett.114.212502
Hupin, Guillaume, Quaglioni, Sofia, and Navratil, Petr. Fri .
"Unified description of 6Li structure and deuterium-4He dynamics with chiral two- and three-nucleon forces". United States. https://doi.org/10.1103/PhysRevLett.114.212502. https://www.osti.gov/servlets/purl/1252618.
@article{osti_1252618,
title = {Unified description of 6Li structure and deuterium-4He dynamics with chiral two- and three-nucleon forces},
author = {Hupin, Guillaume and Quaglioni, Sofia and Navratil, Petr},
abstractNote = {Here, we provide a unified ab initio description of the 6Li ground state and elastic scattering of deuterium (d) on 4He (α) using two- and three-nucleon forces from chiral effective field theory. We analyze the influence of the three-nucleon force and reveal the role of continuum degrees of freedom in shaping the low-lying spectrum of 6Li. The calculation reproduces the empirical binding energy of 6Li, yielding an asymptotic D- to S-state ratio of the 6Li wave function in the d+α configuration of –0.027, in agreement with a determination from 6Li–4He elastic scattering, but overestimates the excitation energy of the 3+ state by 350 keV. The bulk of the computed differential cross section is in good agreement with data. These results endorse the application of the present approach to the evaluation of the 2H(α,γ)6Li radiative capture, responsible for the big-bang nucleosynthesis of 6Li.},
doi = {10.1103/PhysRevLett.114.212502},
journal = {Physical Review Letters},
number = 21,
volume = 114,
place = {United States},
year = {Fri May 29 00:00:00 EDT 2015},
month = {Fri May 29 00:00:00 EDT 2015}
}
Web of Science
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Works referencing / citing this record:
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