A Comparative Study of Pentaquark Interpolating Currents

R. D. Matheus; F. S. Navarra; M. Nielsen; R. Rodrigues da Silva

doi:10.1016/j.physletb.2004.09.072

A Comparative Study of Pentaquark Interpolating Currents

高能物理 - 唯象学 2009-11-10 v2 核理论

作者: R. D. Matheus , F. S. Navarra , M. Nielsen , R. Rodrigues da Silva

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摘要

In a diquark-diquark-antiquark picture of pentaquarks, we use two interpolating currents to calculate the mass of the recently measured $\Xi^{--}$ state in the framework of QCD sum rules. We show that, even though yielding similar values for $m_{\Xi^{--}}$ (and close to the experimental value), these currents differ from each other in what concerns the strength of the pole, convergence of the OPE and sensitivity to the continuum threshold parameter.

关键词

tetraquark qcd sum rules

引用

@article{arxiv.hep-ph/0406246,
  title  = {A Comparative Study of Pentaquark Interpolating Currents},
  author = {R. D. Matheus and F. S. Navarra and M. Nielsen and R. Rodrigues da Silva},
  journal= {arXiv preprint arXiv:hep-ph/0406246},
  year   = {2009}
}

备注

19 pages, 8 figures, replaced version accepted for publication in Phys. Lett. B

A Comparative Study of Pentaquark Interpolating Currents

摘要

关键词

引用

备注

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