Perturbative computations of neutron-proton scattering observables using renormalization-group invariant chiral effective field theory up to
Oliver Thim, Andreas Ekström, and Christian Forssén
Phys. Rev. C 109, 064001 (2024) - Published 3 June, 2024
Lepton-neutron interaction and -wave low-energy parameters
Jaume Carbonell and Tobias Frederico
Phys. Rev. C 109, 064002 (2024) - Published 13 June, 2024
Inference of the low-energy constants in -full chiral effective field theory including a correlated truncation error
Isak Svensson, Andreas Ekström, and Christian Forssén
Phys. Rev. C 109, 064003 (2024) - Published 18 June, 2024
A chiral effective field theory (EFT) description of the nuclear interaction contains a power counting to organize the order-by-order contributions of the strong-interaction dynamics to nuclear observables. The truncation of the EFT expansion at finite order induces errors in predicted nucleon-nucleon scattering observables. These errors are correlated across scattering energies and angles, which robust uncertainty quantification needs to account for. This work reports a Bayesian analysis for neutron-proton scattering in a so-called -full version of chiral EFT. The authors employ Gaussian processes to learn about the correlation structure of the truncation errors and find that the effective number of neutron-proton scattering data is reduced by approximately a factor of 4 due to the correlation structure of the EFT truncation error (shown in the figure for differential cross sections). The results are important for analyzing the predictive capabilities in - nuclear theory.
Constructing inverse scattering potentials for charged particles using a reference potential approach
O. S. K. S. Sastri, Arushi Sharma, and Ayushi Awasthi
Phys. Rev. C 109, 064004 (2024) - Published 18 June, 2024






