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The European Physical Journal C

, Volume 59, Issue 3, pp 675–681 | Cite as

Possible tetraquark states in the π + χ c1 invariant-mass distribution

  • Zhi-Gang WangEmail author
Regular Article - Theoretical Physics

Abstract

In this article, we assume that there exist hidden charmed tetraquark states with spin–parity J P=1, and we calculate their masses with the QCD sum rules. The numerical result indicates that the masses of the vector hidden charmed tetraquark states are about M Z =(5.12±0.15) GeV or M Z =(5.16±0.16) GeV, which are inconsistent with the experimental data on the π + χ c1 invariant-mass distribution. The hidden charmed mesons Z 1, Z 2 or Z may be scalar hidden charmed tetraquark states, hadro-charmonium resonances or molecular states.

PACS

12.39.Mk 12.38.Lg 

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2008

Authors and Affiliations

  1. 1.Department of PhysicsNorth China Electric Power UniversityBaodingChina
  2. 2.Kavli Institute for Theoretical Physics China, Institute of Theoretical PhysicsChinese Academy of SciencesBeijingChina

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