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The European Physical Journal C

, Volume 62, Issue 2, pp 375–382 | Cite as

Another tetraquark structure in the π + χ c1 invariant mass distribution

  • Zhi-Gang WangEmail author
Regular Article - Theoretical Physics

Abstract

In this article, we assume that there exists a scalar hidden charm tetraquark state in the π + χ c1 invariant mass distribution, and we study its mass using the QCD sum rules. The numerical result M Z =(4.36±0.18) GeV is consistent with the mass of the Z(4250). The Z(4250) may be a tetraquark state, but 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.

PACS

12.39.Mk 12.38.Lg 

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2009

Authors and Affiliations

  1. 1.Department of PhysicsNorth China Electric Power UniversityBaodingPeople’s Republic of China

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