Describing non-qqˉq\bar q candidates

preprint2004arXivOpen access

Abstract

Despite the apparent simplicity of meson spectroscopy there are some states which cannot be accommodated in the usual qqˉq\bar q structure. Among them there are either exotic states as the X(1600) or the recently measured charm states DsJ∗D_{sJ}^* and X(3872) and some of the light scalar mesons. In this work we present a possible description of these states in terms of tetraquarks.

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