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arXiv · 0807.4592

Another tetraquark structure in the $π^+ χ_{c1}$ invariant mass distribution

Zhi-Gang Wang
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Abstract

In this article, we assume that there exists a scalar hidden charm tetraquark state in the $π^+ χ_{c1}$ invariant mass distribution, and study its mass using the QCD sum rules. The numerical result $M_{Z}=(4.36\pm0.18) \rm{GeV}$ is consistent with the mass of the Z(4250). The Z(4250) may be a tetraquark state, other possibilities, such as a hadro-charmonium resonance and a $D_1^+\bar{D}^0+ D^+\bar{D}_1^0$ molecular state are not excluded.

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Zhi-Gang Wang. 2009-04-07. Another tetraquark structure in the $π^+ χ_{c1}$ invariant mass distribution. https://doi.org/10.1140/epjc%2Fs10052-009-1043-x

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