Partial-wave decomposition of isospin-projected subleading three-nucleon contact interactions
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866911401736404992 |
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| author | Filandri, Elena Girlanda, Luca Capitani, Ylenia |
| author_facet | Filandri, Elena Girlanda, Luca Capitani, Ylenia |
| contents | We analyze the subleading three-nucleon contact interaction terms at N4LO in chiral effective field theory. We perform the isospin projection into $T=1/2$ and $T=3/2$ states, and find that only eleven of the thirteen operators contribute in the $T=1/2$ channel. By projection on the partial waves of the asymptotic configuration of $N-d$ scattering states in momentum space, we find contributions from ten combinations of LECs. These results provide a useful basis for including N4LO three-body forces in few-body calculations and for constraining them through numerical fits to data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_19033 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Partial-wave decomposition of isospin-projected subleading three-nucleon contact interactions Filandri, Elena Girlanda, Luca Capitani, Ylenia Nuclear Theory We analyze the subleading three-nucleon contact interaction terms at N4LO in chiral effective field theory. We perform the isospin projection into $T=1/2$ and $T=3/2$ states, and find that only eleven of the thirteen operators contribute in the $T=1/2$ channel. By projection on the partial waves of the asymptotic configuration of $N-d$ scattering states in momentum space, we find contributions from ten combinations of LECs. These results provide a useful basis for including N4LO three-body forces in few-body calculations and for constraining them through numerical fits to data. |
| title | Partial-wave decomposition of isospin-projected subleading three-nucleon contact interactions |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2601.19033 |