and decay widths from QCD sum rules
arXiv:hep-ph/0605038 · doi:10.1016/j.physletb.2006.06.054
Abstract
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 and , using QCD sum rules with the hypothesis that is a four quark state.
arXiv comment1 figure added. Version accepted for publication at Phys. Lett. B
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Cited by in corpus (42)
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- Pentaquark and Tetraquark states
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- decay width in QCD sum rules
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