A study of hyperons in nuclear matter based on chiral effective field theory

Abstract

The in-medium properties of a hyperon-nucleon potential, derived within chiral effective field theory and fitted to Lambda-N and Sigma-N scattering data, are investigated. Results for the single-particle potentials of the Lambda and Sigma hyperons in nuclear matter are reported, based on a conventional first-order Brueckner calculation. The Sigma-nucleus potential is found to be repulsive, in agreement with phenomenological information. A weak Lambda-nucleus spin-orbit interaction can be achieved by an appropriate adjustment of a low-energy constant corresponding to an antisymmetric Lambda-N -- Sigma-N spin-orbit interaction that arises at next-to-leading order in the effective field theory approach.

12 pages, 2 figures; several references added, several typos corrected

References in corpus (31)

• Modern Theory of Nuclear Forces
• The two-nucleon system at next-to-next-to-next-to-leading order
• Soft-core hyperon-nucleon potentials
• In-medium nuclear interactions of low-energy hadrons
• Hyperon-nucleon interaction at next-to-leading order in chiral effective field theory
• Hyperon-nucleon interactions - a chiral effective field theory approach
• Baryon-baryon interactions in the SU6 quark model and their applications to light nuclear systems
• The Juelich hyperon-nucleon model revisited
• Extended-soft-core Baryon-Baryon Model II. Hyperon-Nucleon Interaction
• Constraints on $\Sigma$ Nucleus Dynamics from Dirac Phenomenology of ${\Sigma }^{-}$ Atoms
• Study of the Sigma-nucleus potential by the (pi^-,K^+) reaction on medium-to-heavy nuclear targets
• Strange nuclear matter within Brueckner-Hartree-Fock Theory
• Hyperon-Nucleon Interactions and the Composition of Dense Nuclear Matter from Quantum Chromodynamics
• Strangeness nuclear physics: a critical review on selected topics
• Semiclassical Distorted Wave Model Analysis of the $({\pi }^{-},K^{+})$ $\Sigma$ Formation Inclusive Spectrum
• The hyperon-nucleon interaction: conventional versus effective field theory approach
• Hyperon Single-Particle Potentials Calculated from SU6 Quark-Model Baryon-Baryon Interactions
• Relativistic SU(3) chiral baryon-baryon Lagrangian up to order q^2
• Strangeness nuclear physics - 2010
• Strength of the $\Sigma$ Single-Particle Potential in Nuclei From Semiclassical Distorted Wave Model Analysis of $({\pi }^{-},K^{+})$ Inclusive Spectrum
• Chiral SU(3) dynamics and $\Lambda$-hyperons in the nuclear medium
• Comparative study of hyperon-nucleon interactions of quark model and chiral effective field theory by low-momentum equivalent interactions and $G$ matrices
• Spin-orbit splitting of 9 Lambda Be excited states studied with the SU_6 quark-model baryon-baryon interactions
• Single-Particle Spin-Orbit Strengths of the Nucleon and Hyperons by SU6 Quark-Model
• Chiral dynamics of $\Sigma$-hyperons in the nuclear medium
• Note on spin-orbit interactions in nuclei and hypernuclei
• Structure of p-shell hypernuclei
• $\Sigma$-nuclear spin-orbit coupling from two-pion exchange
• P-wave Lambda N - Sigma N coupling and the spin-orbit splitting of 9 Lambda Be
• The baryon-decuplet in the chiral dynamics of Lambda-hyperons in nuclear matter
• Predicting the Lambda binding energy in nuclear matter

Cited by in corpus (37)

• Strangeness in nuclear physics
• Strangeness in Nuclei and Neutron Stars
• Hyperon-nucleon interaction within chiral effective field theory revisited
• Strangeness S=-2 baryon-baryon interaction at next-to-leading order in chiral effective field theory
• Lambda-nuclear interactions and hyperon puzzle in neutron stars
• Towards grounding nuclear physics in QCD
• Hyperons in nuclear matter from SU(3) chiral effective field theory
• Equation of state for neutron stars with hyperons by the variational method
• Relativistic hypernuclear compact stars with calibrated equations of state
• Hyperonic stars and the symmetry energy
• Leading three-baryon forces from SU(3) chiral effective field theory
• Hyperon-nuclear interactions from SU(3) chiral effective field theory
• Leading order relativistic hyperon-nucleon interactions in chiral effective field theory
• In-medium properties of a $\Xi N$ interaction derived from chiral effective field theory
• Hyperon-nucleon interaction in chiral effective field theory at next-to-next-to-leading order
• Density-dependent effective baryon-baryon interaction from chiral three-baryon forces
• Implications of an increased $\Lambda$-separation energy of the hypertriton
• Single-particle potential of the $\Lambda$ hyperon in nuclear matter with chiral effective field theory NLO interactions including effects of YNN three-baryon interactions
• Towards baryon-baryon scattering in manifestly Lorentz-invariant formulation of SU(3) baryon chiral perturbation theory
• Lambda-nucleon scattering in baryon chiral perturbation theory
• Structure of single-$\Lambda$ hypernuclei with chiral hyperon-nucleon potentials
• Exploring the ${\Sigma }^{+}p$ interaction by measurements of the correlation function
• Predictions for charmed nuclei based on $Y_{c}N$ forces inferred from lattice QCD simulations
• Hyperon Dynamics in Heavy-ion Collisions near threshold energy
• S-shell $\Lambda \Lambda$ hypernuclei based on chiral interactions
• Medium effects in $\Lambda K^{+}$ pair production by 2.83 GeV protons on nuclei
• Near-threshold $K^{\ast }(892{)}^{+}$ meson production in the interaction of ${\pi }^{-}$ mesons with nuclei
• Foundations of Strangeness Nuclear Physics derived from chiral Effective Field Theory
• Hyperon dynamics and production of multi-strangeness hypernuclei in heavy-ion collisions at 3A GeV
• Modification of hyperon masses in nuclear matter
• Medium effects in antikaon-induced ${\Xi }^{-}$ hyperon production on nuclei near threshold
• High-density symmetry energy from subthreshold hyperon production in heavy-ion collisions
• Dense Hadronic Matter in Neutron Stars
• Neutron stars with Bogoliubov quark-meson coupling model
• Properties of hyperons in nuclear matter from chiral hyperon-nucleon interactions at next-to-next-to-leading order
• Strange Baryons in Nuclei and Neutron Stars
• Hyperon interaction with dense nuclear matter and link to neutron stars