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27 papers · 2 filters
Lambda-nuclear interactions and hyperon puzzle in neutron stars
J. Haidenbauer, U. -G. Meißner, N. Kaiser +1
Brueckner theory is used to investigate the in-medium properties of a -hyperon in nuclear and neutron matter, based on hyperon-nucleon interactions derived within SU(3) chiral e…
Medium effects in pair production by 2.83 GeV protons on nuclei
E. Ya. Paryev, M. Hartmann, Yu. T. Kiselev
We study pair production in the interaction of protons of 2.83 GeV kinetic energy with C, Cu, Ag, and Au target nuclei in the framework of the nuclear spectral function appr…
Renormalization of the three-boson system with short-range interactions revisited
E. Epelbaum, J. Gegelia, Ulf-G. Meißner +1
We consider renormalization of the three-body scattering problem in low-energy effective field theory of self-interacting scalar particles by applying time-ordered perturbation the…
Production of charmed baryons in collisions close to their thresholds
J. Haidenbauer, G. Krein
Cross sections for the charm-production reactions , , , and are presented, for energies near their respecti…
Nuclear axial current operators to fourth order in chiral effective field theory
H. Krebs, E. Epelbaum, U. -G. Meißner
We present the complete derivation of the nuclear axial charge and current operators as well as the pseudoscalar operators to fourth order in the chiral expansion relative to the d…
Universal dimer-dimer scattering in lattice effective field theory
Serdar Elhatisari, Kris Katterjohn, Dean Lee +2
We consider two-component fermions with short-range interactions and large scattering length. This system has universal properties that are realized in several different fields of…