Investigations of the few-nucleon systems within the LENPIC project

Jacek Golak,Kacper Topolnicki,Hermann Krebs,Volodymyr Soloviov,Vitalii Urbanevych,Alessandro Grassi,Roman Skibiński,Henryk Witała,Evgeny Epelbaum,Yuriy Volkotrub,Patrick Reinert,Kamada Hiroyuki

doi:10.21468/scipostphysproc.3.002

Jacek Golak, Kacper Topolnicki + Show 10 more

Open Access

https://doi.org/10.21468/scipostphysproc.3.002

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Abstract

Results presented in this contribution are obtained within the Low Energy Nuclear Physics International Collaboration (LENPIC). LENPIC aims to develop chiral nucleon-nucleon and many-nucleon interactions complete through at least the fourth order in the chiral expansion. These interactions will be used together with consistently derived current operators to solve the structure and reactions of light and medium-mass nuclei including electroweak processes. In this contribution the current status of the chiral nuclear forces and current operators will be briefly discussed. A special role played by the calculations of nucleon-deuteron scattering will be explained.

Highlights

The Low Energy Nuclear Physics International Collaboration (LENPIC) is a project established in 2013 that "aims to develop chiral effective field theory nucleon-nucleon (NN) and threenucleon (3N) interactions complete through at least fourth order in the chiral expansion (N3LO)
That is why we studied various electroweak processes: muon capture on 3He and 3H [48, 49],neutrino scattering off 3He and 3H [50, 51] and pion radiative capture in 3He and 3H [52] exactly in the same framework as electron scattering on 3He and 3H and photodisintegration of 3He and 3H [53], using the semi-phenomenological AV18 [2] potential and the single nucleon current, including in some cases 3N force (3NF) and 2N current effects
The reader should be aware that in this contribution we restricted ourselves to the the fewnucleon part of the LENPIC project

Summary

Introduction

The Low Energy Nuclear Physics International Collaboration (LENPIC) is a project established in 2013 that "aims to develop chiral effective field theory nucleon-nucleon (NN) and threenucleon (3N) interactions complete through at least fourth order in the chiral expansion (N3LO). Using these new interactions, LENPIC aims to solve the structure and reactions of light nuclei including electroweak observables with consistent treatment of the corresponding exchange currents" [1].

Nucleon-deuteron scattering with semi-phenomenological nuclear potentials

Nucleon-deuteron scattering with chiral nuclear potentials

Electroweak processes

Conclusion