$\Delta$ Effects in Pion-Nucleon Scattering and the Strength of the Two-Pion-Exchange Three-Nucleon Interaction. Pandharipande, V. R., Phillips, D. R., & Van Kolck, U. Physical Review C - Nuclear Physics, 71(6):64002, jun, 2005.
$\Delta$ Effects in Pion-Nucleon Scattering and the Strength of the Two-Pion-Exchange Three-Nucleon Interaction [link]Paper  doi  abstract   bibtex   
We consider the relationship between p-wave $\pi$N scattering and the strength of the p-wave two-pion-exchange three-nucleon interaction (TPE3NI). We explain why effective theories that do not contain the Delta resonance as an explicit degree of freedom tend to overestimate the strength of the TPE3NI. The overestimation can be remedied by higher-order terms in these "Delta-less" theories, but such terms are not yet included in state-of-the-art chiral effective field theory calculations of the nuclear force. This suggests that these calculations can predict the strength of the TPE3NI only to an accuracy of ±25%. \textcopyright 2005 The American Physical Society.
@article{pandharipande_ensuremathdelta_2005,
abstract = {We consider the relationship between p-wave $\pi$N scattering and the strength of the p-wave two-pion-exchange three-nucleon interaction (TPE3NI). We explain why effective theories that do not contain the Delta resonance as an explicit degree of freedom tend to overestimate the strength of the TPE3NI. The overestimation can be remedied by higher-order terms in these "Delta-less" theories, but such terms are not yet included in state-of-the-art chiral effective field theory calculations of the nuclear force. This suggests that these calculations can predict the strength of the TPE3NI only to an accuracy of ±25%. {\textcopyright} 2005 The American Physical Society.},
annote = {From Duplicate 2 ({\textbackslash}ensuremath{\textbackslash}{Delta} effects in pion-nucleon scattering and the strength of the two-pion-exchange three-nucleon interaction - Pandharipande, V R; Phillips, D R; Kolck, U van)

Publisher: American Physical Society},
author = {Pandharipande, V. R. and Phillips, D. R. and {Van Kolck}, U.},
doi = {10.1103/PhysRevC.71.064002},
issn = {1089490X},
journal = {Physical Review C - Nuclear Physics},
month = {jun},
number = {6},
pages = {64002},
title = {{$\Delta$ Effects in Pion-Nucleon Scattering and the Strength of the Two-Pion-Exchange Three-Nucleon Interaction}},
url = {https://link.aps.org/doi/10.1103/PhysRevC.71.064002},
volume = {71},
year = {2005}
}

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