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The European Physical Journal C

, Volume 51, Issue 4, pp 883–889 | Cite as

Λc(2940)+: a possible molecular state?

  • Xiao-Gang He
  • Xue-Qian Li
  • Xiang LiuEmail author
  • Xiao-Qiang Zeng
Regular Article - Theoretical Physics

Abstract

A new baryonic state Λc(2940)+ has recently been discovered by the Babar collaboration in the D0p channel. Later Belle collaboration also observed this state in the Σc(2455)0,++π±→Λc+π+π- channel. The mass of Λc(2940)+ is just a few MeV below the sum of D*0 and p masses suggesting a possibility that this state may be a D*0p molecular state. In this paper we study whether such a molecular state can be consistent with data. We find that the molecular structure can explain data and that if Λc(2940)+ is a D*0p molecular state it is likely a 1/2- state. Several other decays modes are also suggested to further test the molecular structure of Λc+(2940).

Keywords

Form Factor Heavy Quark Decay Mode Molecular State Decay Amplitude 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2007

Authors and Affiliations

  • Xiao-Gang He
    • 1
    • 2
  • Xue-Qian Li
    • 1
  • Xiang Liu
    • 1
    Email author
  • Xiao-Qiang Zeng
    • 1
  1. 1.Physics DepartmentPeking UniversityBeijingP.R. China
  2. 2.Department of Physics and Center for Theoretical SciencesNational Taiwan UniversityTaipeiTaiwan

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