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Investigating the tetraquark structure of the new mesons

M. Nielsen·F. S. Navarra·M. E. Bracco
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Abstract

Using the QCD sum rule approach we investigate the possible four-quark structure of the recently observed mesons $D_{sJ}^{+}(2317)$, firstly observed by BaBaR, X(3872), firstly observed by BELLE and $D_0^{*0}(2308)$ observed by BELLE. We use diquark-antidiquark currents and work in full QCD, without relying on $1/m_c$ expansion. Our results indicate that a four-quark structure is acceptable for these mesons.

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M. Nielsen, F. S. Navarra, M. E. Bracco. 2006-09-19. Investigating the tetraquark structure of the new mesons. https://doi.org/10.1590/s0103-97332007000100018

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