To bind or not to bind: The H-dibaryon in light of chiral effective field theory

Abstract

We analyse the quark mass dependence of the binding energy of the H-dibaryon in the framework of chiral effective field theory. We show that the SU(3) breaking effects induced by the differences of the pertinent two-baryon thresholds (Lambda-Lambda, Xi-N, Sigma-Sigma) have a very pronounced impact that need to be incorporated properly in future lattice QCD simulations. We also point out that if the H-dibaryon is a two-baryon bound state, its dominant component is Xi-N rather than Lambda-Lambda, which is a consequence of the approximate SU(3) flavor symmetry of the two-baryon interactions.

8 pages, 2 figures; Results updated to the new H binding energy reported by NPLQCD, conclusions remain unchanged, several references added

References in corpus (5)

• Evidence for a Bound H-dibaryon from Lattice QCD
• Hyperon-nucleon interactions - a chiral effective field theory approach
• Baryon-baryon interactions in the SU6 quark model and their applications to light nuclear systems
• Extended-soft-core Baryon-Baryon Model II. Hyperon-Nucleon Interaction
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Cited by in corpus (37)

• Light Nuclei and Hypernuclei from Quantum Chromodynamics in the Limit of SU(3) Flavor Symmetry
• Strangeness in Nuclei and Neutron Stars
• Two-Baryon Potentials and H-Dibaryon from 3-flavor Lattice QCD Simulations
• On the History of Dibaryons and their Final Observation
• Loosely-bound objects produced in nuclear collisions at the LHC
• Towards a theory of hadron resonances
• Strangeness S=-2 baryon-baryon interaction at next-to-leading order in chiral effective field theory
• Lattice QCD study of the $H$ dibaryon using hexaquark and two-baryon interpolators
• Coupled-channel effects in hadron-hadron correlation functions
• Weakly bound $H$ dibaryon from SU(3)-flavor-symmetric QCD
• Nuclear matrix elements from lattice QCD for electroweak and beyond-Standard-Model processes
• Hadronic Molecular States Composed of Heavy Flavor Baryons
• Hadron-Hadron Correlation and Interaction from Heavy-Ion Collisions
• 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
• Exotic bound states of two baryons in light of chiral effective field theory
• Strangeness $S=-2$ baryon-baryon interactions in relativistic chiral effective field theory
• Do $\Xi \Xi$ bound states exist?
• Scattering of decuplet baryons in chiral effective field theory
• Search for weakly decaying $\overline{\Lambda \mathrm{n}}$ and $\Lambda \Lambda$ exotic bound states in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Towards baryon-baryon scattering in manifestly Lorentz-invariant formulation of SU(3) baryon chiral perturbation theory
• Scattering of charmed baryons on nucleons
• Scattering lengths of strangeness S=-2 baryon-baryon interactions
• Lambda-nucleon scattering in baryon chiral perturbation theory
• Examination of the H dibaryon within a chiral constituent quark model
• Quark mass dependence of H-dibaryon in $\Lambda \Lambda$ scattering
• $A=4-7$ $\Xi$ hypernuclei based on interactions from chiral effective field theory
• Study of three-flavored heavy dibaryons using lattice QCD
• Baryon-baryon interactions from chiral effective field theory
• Strange quarks and lattice QCD
• Foundations of Strangeness Nuclear Physics derived from chiral Effective Field Theory
• Double-strangeness production in $\Lambda p\to K^{+}X$ reaction
• Production of the H dibaryon via the (K^-,K^+) reaction on a ${}^{12}$C target
• Quark mass dependence of H-dibaryon
• Investigation of ${\Xi }^{-}nn$ ($S=-2$) Hypernucleus in Low-energy Pionless Halo Effective Theory
• Double-Lambda hypernuclei within a Skyrme-Hartree-Fock approach
• ${}_{\Lambda \Lambda }^5$H and ${}_{\Lambda \Lambda }^5$He Hypernuclei reexamined in Halo/Cluster Effective Theory