TY - JOUR
T1 - Hyperon-nucleon interaction at next-to-leading order in chiral effective field theory
AU - Haidenbauer, J.
AU - Petschauer, S.
AU - Kaiser, N.
AU - Meißner, U. G.
AU - Nogga, A.
AU - Weise, W.
N1 - Funding Information:
We thank Evgeny Epelbaum for his collaboration in the early stages of this investigation. This work is supported in part by the DFG and the NSFC through funds provided to the Sino-German CRC 110 “Symmetries and the Emergence of Structure in QCD” and by the EU Integrated Infrastructure Initiative HadronPhysics3 . S. Petschauer thanks the “TUM Graduate School”. Part of the numerical calculations has been performed on the supercomputer cluster of the JSC, Jülich, Germany.
PY - 2013
Y1 - 2013
N2 - Results for the ΛN and σN interactions obtained at next-to-leading order in chiral effective field theory are reported. At the order considered there are contributions from one- and two-pseudoscalar-meson exchange diagrams and from four-baryon contact terms without and with two derivatives. SU(3) flavor symmetry is imposed for constructing the hyperon-nucleon interaction, however, the explicit SU(3) symmetry breaking by the physical masses of the pseudoscalar mesons (π, K, η) and of the involved baryons is taken into account. An excellent description of the hyperon-nucleon system can be achieved at next-to-leading order. It is on the same level of quality as the one obtained by the most advanced phenomenological hyperon-nucleon interaction models.
AB - Results for the ΛN and σN interactions obtained at next-to-leading order in chiral effective field theory are reported. At the order considered there are contributions from one- and two-pseudoscalar-meson exchange diagrams and from four-baryon contact terms without and with two derivatives. SU(3) flavor symmetry is imposed for constructing the hyperon-nucleon interaction, however, the explicit SU(3) symmetry breaking by the physical masses of the pseudoscalar mesons (π, K, η) and of the involved baryons is taken into account. An excellent description of the hyperon-nucleon system can be achieved at next-to-leading order. It is on the same level of quality as the one obtained by the most advanced phenomenological hyperon-nucleon interaction models.
KW - Effective field theory
KW - Hyperon-nucleon interaction
UR - http://www.scopus.com/inward/record.url?scp=84880392332&partnerID=8YFLogxK
U2 - 10.1016/j.nuclphysa.2013.06.008
DO - 10.1016/j.nuclphysa.2013.06.008
M3 - Article
AN - SCOPUS:84880392332
SN - 0375-9474
VL - 915
SP - 24
EP - 58
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
ER -