New spectroscopy from the B factories, the advent of CLEO-c and the BES upgrade renewed the interest in charmonia. Among the new measurements, the state X(3872) has received special attention due to its unexpected properties. Its structure has been studied with different theoretical approaches, most of them being able to reproduce the measured mass. A further test for the theoretical descriptions of the X(3872) is to explain its narrow decay width. In this work we address the decays X -> J/psi pi(+)pi(-)pi(0) and X -> J/psi pi(+)pi(-), using QCD sum rules with the hypothesis that X is a four quark state. (c) 2006 Published by Elsevier B.V.
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机译：来自B工厂的新光谱学，CLEO-c的出现和BES的升级重新激发了人们对charmonia的兴趣。在新的测量中，状态X（3872）因其意想不到的特性而受到特别关注。已经用不同的理论方法研究了它的结构，其中大多数能够再现测量的质量。对X（3872）的理论描述的进一步检验是解释其窄衰减宽度。在这项工作中，我们使用 QCD 和规则解决了衰变 X -> J/psi pi（+）pi（-）pi（0） 和 X -> J/psi pi（+）pi（-），假设 X 是四夸克态。（c） 2006年由Elsevier B.V.出版
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