Journal Article

FZJ-2021-00175

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Towards high-order calculations of three-nucleon scattering in chiral effective field theory

Epelbaum, E. (Corresponding author)FZJ* ; Golak, J.FZJ* ; Hebeler, K. ; Kamada, H. ; Krebs, H. ; Meißner, U.-G.FZJ* ; Nogga, A.FZJ* ; Reinert, P. ; Skibiński, R. ; Topolnicki, K. ; Volkotrub, Y. ; Witała, H.

2020
Springer Heidelberg

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Please use a persistent id in citations: http://hdl.handle.net/2128/26773  doi:10.1140/epja/s10050-020-00102-2

Abstract: We discuss the current status of chiral effective field theory in the three-nucleon sector and present selected results for nucleon–deuteron scattering observables based on semilocal momentum-space-regularized chiral two-nucleon potentials together with consistently regularized three-nucleon forces up to third chiral order. Using a Bayesian model for estimating truncation errors, the obtained results are found to provide a good description of the experimental data. We confirm our earlier findings that a high-precision description of nucleon–deuteron scattering data below pion production threshold will require the theory to be pushed to fifth chiral order. This conclusion is substantiated by an exploratory study of selected short-range contributions to the three-nucleon force at that order, which, as expected, are found to have significant effects on polarization observables at intermediate and high energies. We also outline the challenges that will need to be addressed in order to push the chiral expansion of three-nucleon scattering observables to higher orders.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)
2. Theorie der starken Wechselwirkung (IKP-3)
3. JARA - HPC (JARA-HPC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)
2. DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076) (196253076)
3. Nuclear Lattice Simulations (jara0015_20200501) (jara0015_20200501)
4. Chiral dynamics in Few-Baryon Systems (jikp03_20190501) (jikp03_20190501)

Appears in the scientific report 2020

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Springer ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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