Large states beyond qq in QCD: From pentaquarks to no quarksF.E. Close
Department of Theoretical Physics, University of Oxford, Keble Rd., Oxford, OX1 3NP, United Kingdom
(Received 15 September 2004 / Published online 08 February 2005)
This talk summarises evidence for states beyond those expected in the simple constituent quark model. I focus on the scalar glueball and its mixing with states in the nonet, and also on correlations in Strong QCD that may form diquarks and seed states. Some models of the pentaquark candidate Θ(1540) are critically discussed.
© Società Italiana di Fisica, Springer-Verlag 2005