The Narrow Theta(1543)--A QCD Dilemma: Tube or Not Tube?

Abstract

We argue that a width of less than MeV of the new Theta resonance is inconsistent with the observed ratio of resonance and background events in the various photon initiated experiments if the latter can be described by K, K*, etc., exchange. An evaluation of the Feynman diagrams which were believed to be relevant is presented and supports the general claim in the one case where a cross section has been given by the experimental group. More detailed arguments based on the flux tube model explaining the narrow widths and the apparent conflict with the production rates are presented. We predict narrow Tetra-quarks at mass ~ O(1-1.2 GeV) which the analysis of LEAR may have missed.

9 pages, 2 figures Please note that Nussinov has previously submitted entries to the ArXives through assistance of other individuals. The submitter of this paper ([email protected]) is L. Robinette, administrative assistant to the Maryland TQHN Group; comments should be addressed to [email protected]

References in corpus (1)

• Pentaquark baryon production from photon-neuteron reactions

Cited by in corpus (22)

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• The static tetraquark and pentaquark potentials
• Pentaquark baryons in SU(3) quark model
• Why the Theta+ is seen in some experiments and not in others - a possible explanation
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• Coherent Theta^+ and Lambda(1520) photoproduction off the deuteron
• Theta^+ baryon production in KN and NN reactions
• Properties of baryon anti-decuplet
• Exotic states of matter in heavy meson decays
• Prospects for Pentaquark Production at Meson Factories
• A lattice study of the pentaquark states
• Negative parity pentaquarks in large Nc QCD and quark model
• Theta+ formation in inclusive gamma D -> pK- X
• Spin asymmetries in gamma + N --> K*bar + Theta^+
• The pentaquark potential, mass and density-density correlator
• Some aspects of ${\Theta }^{+}$ parity determination in the reaction $\gamma N\to {\Theta }^{+}\bar{K}\to NK\bar{K}$
• SU(3) systematization of baryons
• Possibility of determinig the parity of the pentaquark ${\Theta }^{+}$ from photoproduction near threshold
• Some (further) Comments on the Theta(1540) Pentaquark