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The European Physical Journal C

, Volume 51, Issue 4, pp 841–847 | Cite as

Study of Bc-→X(3872)π-(K-) decays in the covariant light-front approach

  • Wei Wang
  • Yue-Long Shen
  • Cai-Dian LüEmail author
Regular Article - Theoretical Physics

Abstract

In the covariant light-front quark model, we calculate the form factors of Bc-→J/ψ and Bc-→X(3872). Since the factorization of the exclusive processes Bc-→J/ψπ-(K-) and Bc-→X(3872)π-(K-) can be proved in the soft-collinear effective theory, we can easily get the branching ratios for these decays from the form factors. Taking the uncertainties into account, our results for the branching ratio of Bc-→J/ψπ-(K-) are consistent with previous studies. By identifying X(3872) as a 1++ charmonium state, we obtain BR(Bc-→X(3872)π-)=(1.7+0.7+0.1+0.4-0.6-0.2-0.4)×10-4 and BR(Bc-→X(3872)K-)=(1.3+0.5+0.1+0.3-0.5-0.2-0.3)×10-5. Assuming X(3872) to be a 1 state, the branching ratios will be one order of magnitude larger than those of the 1++ state. These results can easily be used to test the charmonium description for this mysterious meson X(3872) at the LHCb experiment.

Keywords

Form Factor Decay Width Light Meson Charmonium State LHCb Experiment 
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

  1. 1.Institute of High Energy PhysicsChinese Academy of SciencesBeijingP.R. China

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