{ "id": "hep-ph/0405195", "version": "v2", "published": "2004-05-20T16:03:27.000Z", "updated": "2004-05-25T18:39:18.000Z", "title": "Pentaquark spectroscopy: exotic Theta baryons", "authors": [ "R. Bijker", "M. M. Giannini", "E. Santopinto" ], "comment": "6 pages, 2 figures, invited talk at Nuclear Physics, Large and Small, April 19-22, 2004, Hacienda Cocoyoc, Mexico, to be published in AIP Conference Proceedings. Reference added", "doi": "10.1063/1.1805936", "categories": [ "hep-ph" ], "abstract": "We propose a collective stringlike model of pentaquarks with the geometry of an equilateral tetrahedron in which the four quarks are located at the four corners and the antiquark in its center. The nonplanar equilibrium configuration is a consequence of the permutation symmetry of the four quarks. In an application to the spectrum of exotic Theta baryons, we find that the ground state pentaquark has angular momentum and parity J(p)=1/2(-) and a small magnetic moment of 0.382 nuclear magnetons. The decay width is suppressed by the spatial overlap with the decay products.", "revisions": [ { "version": "v2", "updated": "2004-05-25T18:39:18.000Z" } ], "analyses": { "subjects": [ "12.40.Nn", "11.25.-w" ], "keywords": [ "exotic theta baryons", "pentaquark spectroscopy", "nonplanar equilibrium configuration", "ground state pentaquark", "small magnetic moment" ], "tags": [ "conference paper", "journal article" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable", "inspire": 650740, "adsabs": "2004AIPC..726..181B" } } }