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Baryon resonances from chiral coupled-channel dynamics
Title Baryon resonances from chiral coupled-channel dynamics Author info Matthias F. M. Lutz, Evgeni E. Kolomeitsev Author Lutz Matthias F. M. (50%)
Co-authors Kolomeitsev Evgeni E. 1970- (50%) UMBFP06 - Katedra fyziky
Action International Conference on Structure of Baryons . medzinárodná konferencia , 10. , Palaiseau , 25.-29.10.2004 Source document Nuclear Physics A. Vol. 755 (2005), pp. 29C-39C. - Amsterdam : Elsevier B.V., 2005 Keywords atómová fyzika Narrow Baryon Resonances chiral dynamics Language English Country Netherlands systematics 539.1 Annotation 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 Σc(2800) of the BELLE collaboration is reproduced with realistic mass and width parameters. Similarly, the dwave states Λc(2625) and Ξc(2815) are explained naturally as chiral excitations of JP = 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-Nc ground state of QCD should be viewed as hadronic molecular states Public work category ADC No. of Archival Copy 26410 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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