Bulletin of the American Physical Society
Fall 2022 Meeting of the APS Division of Nuclear Physics
Volume 67, Number 17
Thursday–Sunday, October 27–30, 2022; Time Zone: Central Daylight Time, USA; New Orleans, Louisiana
Session MI: Nuclear Theory IV
8:30 AM–10:06 AM,
Sunday, October 30, 2022
Hyatt Regency Hotel
Room: Imperial 12
Chair: Dean Lee, Michigan State University
Abstract: MI.00003 : Ab initio prediction of 4He(d,γ)6Li at big-bang nucleosynthesis energies*
8:54 AM–9:06 AM
Presenter:
Chloë Hebborn
(Michigan State University)
Authors:
Chloë Hebborn
(Michigan State University)
Guillaume Hupin
(IJClab)
Konstantinos Kravvaris
(Lawrence Livermore Natl Lab)
Sofia Quaglioni
(Lawrence Livermore Natl Lab)
Petr Navratil
(TRIUMF)
Peter H Gysbers
(University of British Columbia / TRIUMF)
The radiative capture 4He(d,γ)6Li is the dominant process in the Big Bang Nucleosynthesis (BBN) of 6Li. It therefore strongly influences the abundance ratio of 6Li/7Li., for which observational data are three orders of magnitude higher than BBN predictions. Because of the low cross section and the large experimental uncertainties, it is crucial to have accurate predictions. In this talk, I will present an ab initio calculation of 4He(d,γ)6Li [1], where all nucleons are active and interacting through chiral-EFT nucleon- and three-nucleon forces. After reviewing the ab initio no-core shell model with continuum method, I will show our results which are in excellent agreement with the recent LUNA data [2]. I will also discuss the importance of each electromagnetic transitions on 4He(d,γ)6Li at BBN energies.
[1] Hebborn et al. arXiv:2203.15914
[2] Anders et al. Phys. Rev. Lett. 113, 042501 (2014).
*This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under the FRIB Theory Alliance Award No. DE-SC0013617 and by LLNL under Contract No. DE-AC52-07NA27344.
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