Baryon resonances from chiral coupled-channel dynamics

Abstract

We discuss the formation of s- and d-wave baryon resonances as predicted by the chiral SU(3) symmetry of QCD. Based on the leading order term of the chiral Lagrangian a rich spectrum of molecules is generated, owing to final-state interactions. The spectrum of s- and d-wave baryon states with zero and non-zero charm is remarkably consistent with the empirical pattern. In particular, the recently announced Sigma_c(2800) of the BELLE collaboration is reproduced with realistic mass and width parameters. Similarly, the d-wave states Lambda_c(2625) and Xi_c(2815) are explained naturally to be chiral excitations of J^P=3/2^+ states. In the open-charm sector exotic multiplet structures are predicted. These findings support a radical conjecture: meson and baryon resonances that do not belong to the large-N_c ground state of QCD should be viewed as hadronic molecular states

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• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• A low-lying scalar meson nonet in a unitarized meson model

Cited by in corpus (49)

• A review of the open charm and open bottom systems
• Combining heavy quark spin and local hidden gauge symmetries in the dynamical generation of hidden charm baryons
• Coupled-channel study of crypto-exotic baryons with charm
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• Charmed and strange baryon resonances with heavy-quark spin symmetry
• Hidden charm N and Delta resonances with heavy-quark symmetry
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• Electromagnetic transition form factors of light vector mesons
• N* and Delta* decays into N pi0 pi0
• Dynamically generated open charmed baryons beyond the zero range approximation
• D-meson propagation in hot dense matter
• D-wave baryon resonances with charm from coupled-channel dynamics
• Charmed baryon Sigmac(2800) as a ND hadronic molecule
• Dynamical light vector mesons in low-energy scattering of Goldstone bosons
• Role of vector and pseudoscalar mesons in understanding $1/2^{-}$ $N^{\ast }$ and $\Delta$ resonances
• $S$-wave $D^{(\ast )}N$ molecular states: ${\Sigma }_c(2800)$ and ${\Lambda }_c(2940{)}^{+}$?
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• Electromagnetic transitions in an effective chiral Lagrangian with the eta-prime and light vector mesons
• Compositeness of the strange, charm and beauty odd parity $\Lambda$ states
• Strong evidence for nucleon resonances near 1900\,MeV
• Exotic $bc\bar{q}\bar{q}$ four-quark states
• Charming mesons with baryons and nuclei
• Open charm meson in nuclear matter at finite temperature beyond the zero range approximation
• The associated photoproduction of K+ meson off proton within a coupled-channels K-matrix approach
• Photon-fusion reactions from the chiral Lagrangian with dynamical light vector mesons
• Radiative decays of dynamically generated charmed baryons
• Unraveling the pattern of the $XYZ$ mesons
• On the consistency of recent QCD lattice data of the baryon ground-state masses
• $D{\bar{D}}^{\ast }$ scattering and ${\chi }_{c1}(3872)$ in nuclear matter
• $ND$ and $NB$ systems in quark delocalization color screening model
• Possible signatures for tetraquarks from the decays of $a_0(980)$, $a_0(1450)$
• Formation spectra of charmed meson--nucleus systems using an antiproton beam
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• Study of $qqq\bar{q}Q$ pentaquark system in the Chiral Quark Model
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• Hadronic resonances enhanced by thresholds
• On kinematical constraints in the hadrogenesis conjecture for the baryon resonance spectrum
• Hidden and open heavy-flavor hadronic states
• Polarization observables in double neutral pion photoproduction
• Possibility of ${\Sigma }_c(2800)$ and ${\Lambda }_c(2940{)}^{+}$ as $S$-wave $D^{(\ast )}N$ molecular states
• Dynamically generated hidden-charm baryon resonances
• Dynamical generation of hadronic resonances
• Impressions of the Meson Spectrum: Hybrids & Exotics, present and future
• Polarized $p{K}^{-}$ scattering in Unitary Baryon Chiral Perturbation Theory
• Charmed baryonic resonances in medium
• On the Origin of the $XYZ$ Mesons
• Combined heavy-quark symmetry and large-$N_c$ operator analysis for 2-body counterterms in the chiral Lagrangian with $D$ mesons and charmed baryons
• Charming Baryons