https://doi.org/10.1140/epja/i2019-12689-2
Regular Article - Theoretical Physics
In-medium properties of a 
N interaction derived from chiral effective field theory
1
Institute for Advanced Simulation, Institut für Kernphysik (Theorie) and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425, Jülich, Germany
2
Helmholtz Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115, Bonn, Germany
3
Tbilisi State University, 0186, Tbilisi, Georgia
* e-mail: j.haidenbauer@fz-juelich.de
Received:
15
October
2018
Accepted:
7
January
2019
Published online:
20
February
2019
The in-medium properties of a 
potential derived within chiral effective field theory up to next-to-leading order are investigated. The considered interaction includes the coupling to other baryon-baryon channels in the strangeness 
sector ( 
, 
and is in line with available empirical constraints on the
S -wave scattering length and on elastic and inelastic cross sections. In particular, there are no near-threshold bound states in the system. A G -matrix calculation for this interaction is performed and reveals that the single-particle potential of the -hyperon in nuclear matter is moderately attractive as suggested by recent experimental evidence for the existence of -hypernuclei.
© SIF, Springer-Verlag GmbH Germany, part of Springer Nature, 2019
