2004/01/31 by Pedro Bicudo, P. Bicudo · 2 citations
Physics and Astronomy · #Baryon #Class (philosophy) #Hadron #High-Energy Particle Collisions Research #Lambda #Meson #Nuclear physics #Omega #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Quark model #Quarkonium #Sigma #hep-ph
paper · pdf · doi:10.1016/j.nuclphysa.2004.11.015
published as Nucl.Phys.A748:537-550,2005 · 7 pages, 3 figures, 2 tables, RevTex4
arxiv created 2004/03/13 · openalex publication_date 2004/12/09 · arxiv updated 2009/12/01 · openalex created_date 2017/03/16 · openalex updated_date 2026/08/05
I study the Ds(2317) and Ds(2457) discovered at BABAR, CLEO and BELLE, and find that they belong to a class of strange S=-1 tetraquarks and pentaquarks, which is equivalent to the class of kaonic molecules bound by short range attraction. In this class of hadrons a kaon is strongly trapped by a s-wave meson or baryon. To describe this class of multiquarks the Resonating Group Method is applied to a standard quark model with chiral symmetry breaking, and the short range kaon-meson(baryon) interactions are extracted. A criterion is derived to classify the attractive channels. I conclude that the mesons Bs(0+), Bs(1+), and the baryons Omega cc, Omega cb, Omega bb clearly belong to the new hadronic class of the Ds(2317) and Ds(2457). The hadrons f0(980), Lambda, Sigma c, Sigma b possibly belong to a related family.