A schematic model for pentaquarks based on diquarks

Edward Shuryak; Ismail Zahed

doi:10.1016/j.physletb.2004.03.019

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arXiv · hep-ph/0310270

A schematic model for pentaquarks based on diquarks

Edward Shuryak·Ismail Zahed

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Abstract

QCD instantons are known to produce deeply bound diquarks which may be used as building blocks in the formation of multiquark states, in particular pentaquarks and dibaryons. We suggest a simple model in which the lowest scalar diquark (and possibly the tensor one) can be treated as an independent ``body'', with the same color and (approximately) the mass as a constituent (anti)quark. In this model a new symmetry between states with the same number of ``bodies'' but different number of quarks appear, in particular the 3-``body'' pentaquarks can be naturally related to decuplet baryons. We estimate both the masses and widths of such states, and then discuss the limitations of this model.

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Edward Shuryak, Ismail Zahed. 2004-03-11. A schematic model for pentaquarks based on diquarks. https://doi.org/10.1016/j.physletb.2004.03.019

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