Analysis of the ${\Sigma }_Q$ baryons in the nuclear matter with the QCD sum rules

Abstract

In this article, we extend our previous work to study the $\Sigma$-type heavy baryons ${\Sigma }_c$ and ${\Sigma }_b$ in the nuclear matter using the QCD sum rules, and obtain three coupled QCD sum rules for the masses $M_{{\Sigma }_Q}^{\ast }$, vector self-energies ${\Sigma }_v$ and pole residues ${\lambda }_{{\Sigma }_Q}^{\ast }$ in the nuclear matter. Then we take into account the effects of the unequal pole residues from different spinor structures, and normalize the masses from the QCD sum rules in the vacuum to the experimental data, and obtain the mass-shifts $\delta M_{{\Sigma }_c}=-123\mathrm{MeV}$ and $\delta M_{{\Sigma }_b}=-375\mathrm{MeV}$ in the nuclear matter.

7 pages, 2 figures, revised version

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Cited by in corpus (21)

• Heavy Hadrons in Nuclear Matter
• Recent Progress in QCD Condensate Evaluations and Sum Rules
• Analysis of the heavy mesons in the nuclear matter with the QCD sum rules
• More about the $B$ and $D$ mesons in nuclear matter
• X(3872): propagating in a dense medium
• Properties of nucleon in nuclear matter: once more
• Scalar and vector self-energies of heavy baryons in nuclear medium
• Spin-isospin Kondo effects for ${\Sigma }_c$ and ${\Sigma }_c^{\ast }$ baryons and $\bar{D}$ and ${\bar{D}}^{\ast }$ mesons
• Analysis of the doubly heavy baryons in the nuclear matter with the QCD sum rules
• Analysis of mass modifications of the vector and axial-vector heavy mesons in the nuclear matter with the QCD sum rules
• Magnetic moments of the octet, decuplet, low-lying charm, and low-lying bottom baryons in a nuclear medium
• Strong coupling constants and radiative decays of the heavy tensor mesons
• Analysis of the strong coupling form factors of ${\Sigma }_{b}NB$ and ${\Sigma }_{c}ND$ in QCD sum rules
• Charmed baryons in nuclear matter
• Fate of the doubly heavy spin$-3/2$ baryons in a dense medium
• Analysis of the strong vertices of ${\Sigma }_{c}N{D}^{\ast }$ and ${\Sigma }_{b}N{B}^{\ast }$ in QCD sum rules
• Analysis of the strong vertexes of ${\Sigma }_c^{\ast }ND$ and ${\Sigma }_b^{\ast }NB$ in QCD sum rules
• Medium modification of singly heavy baryons in a pion-mean field approach
• Properties of spin-1/2 heavy baryons at nonzero temperature
• Singly heavy baryons in nuclear matter from an SU(3) chiral soliton model
• Radiative ${\Xi }_b^{-}\to {\Xi }^{-}\gamma$ decay