Analysis of the $Λ_Q$ baryons in the nuclear matter with the QCD sum rules

Details Analysis of the $Λ_Q$ baryons in the nuclear matter with the QCD sum rules Analysis of the $Λ_Q$ baryons in the nuclear matter with the QCD sum rules

2011-08-22

arxiv.org/abs/1108.4251v2

Eur.Phys.J.C71(2011)1816

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 8 figures, revised version

Scientific paper

10.1140/epjc/s10052-011-1816-x

In this article, we study the $\Lambda_c$ and $\Lambda_b$ baryons in the nuclear matter using the QCD sum rules, and obtain the in-medium masses $M_{\Lambda_c}^*=2.335\,\rm{GeV}$, $M_{\Lambda_b}^*=5.678\,\rm{GeV}$, the in-medium vector self-energies $\Sigma^{\Lambda_c}_v=34\,\rm{MeV}$, $\Sigma^{\Lambda_b}_v=32\,\rm{MeV}$, and the in-medium pole residues $\lambda_{\Lambda_c}^*=0.021\,\rm{GeV}^3$, $\lambda_{\Lambda_b}^*=0.026\,\rm{GeV}^3$. The mass-shifts are $M_{\Lambda_c}^*-M_{\Lambda_c}=51\,\rm{MeV}$ and $M_{\Lambda_b}^*-M_{\Lambda_b}=60\,\rm{MeV}$, respectively.

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