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This content will become publicly available on December 17, 2025

Title: Variational inference of effective range parameters for 3 He− 4 He scattering
Abstract We use two different methods, Monte Carlo sampling and variational inference (VI), to perform a Bayesian calibration of the effective-range parameters in3He–4He elastic scattering. The parameters are calibrated to data from a recent set of3He–4He elastic scattering differential cross section measurements. Analysis of these data forElab≤ 4.3 MeV yields a unimodal posterior for which both methods obtain the same structure. However, the effective-range expansion amplitude does not account for the 7/2−state of7Be so, even after calibration, the description of data at the upper end of this energy range is poor. The data up toElab = 2.6 MeV can be well described, but calibration to this lower-energy subset of the data yields a bimodal posterior. After adapting VI to treat such a multi-modal posterior we find good agreement between the VI results and those obtained with parallel-tempered Monte Carlo sampling.  more » « less
Award ID(s):
2004601
PAR ID:
10606734
Author(s) / Creator(s):
; ;
Publisher / Repository:
Institute of Physics, UK
Date Published:
Journal Name:
Journal of Physics G: Nuclear and Particle Physics
Volume:
52
Issue:
1
ISSN:
0954-3899
Page Range / eLocation ID:
015109
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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