Nuclear Theory·nucl-th

Wednesday·July 13, 2022

8 papers—6 primary·2 cross-listed

07
Heavy-quark potential in Gribov-Zwanziger approach around deconfinement phase transition
Wan Wu🇨🇳 · Guojun Huang🇨🇳 · Jiaxing Zhao🇨🇳 · Pengfei Zhuang🇨🇳
The interaction potential between a pair of heavy quarks is calculated with resummed perturbation method in Gribov-Zwanziger approach at finite temperature. The resummed loop correction makes the potential complex. While the real part is, as expected, screened and becomes short-ranged in hot medium, the strength of the imaginary part increases with temperature and is comparable with the real part, which is very different from the previous calculation in HTL approach. This means that, both the color screening and Landau damping play important role in the dissociation of heavy flavor hadrons in hot medium.
↳ hep-phnucl-thPRD(2023)·11 citations
08
Analysis of $Ω (2012)$ as a molecule in the chiral quark model
Xiaohuang Hu🇨🇳 · Jialun Ping🇨🇳
Inspired by the updated information on $Ω (2012)$ by the Belle Collaboration, we conduct a study of all possible $S$ -wave pentaquark systems with quark contents $sss q q ˉ, q = u, d$ in a chiral quark model with the help of Gaussian expansion method. Channel coupling is also considered. The real-scaling method (stabilization method) is employed to identify and check the bound states and the genuine resonances. In addition, the decay widths of all resonances are given. The results show that $Ω (2012)$ can be interpreted as a $Ξ^{*} K$ molecular state with quantum number of $I J^{P} = 0 (\frac{3}{2})^{-}$ . Other resonances are obtained: $Ξ^{*} K^{*}$ with $I J^{P} = 0 (\frac{1}{2})^{-}$ and $0 (\frac{3}{2})^{-}$ , $Ω π$ with $I J^{P} = 1 (\frac{3}{2})^{-}$ . These pentaquark states is expected to be further verified in future experiments.
↳ hep-phnucl-thPRD(2022)·21 citations

Affiliations

first authorsco-authorsvia INSPIRE

Heavy-quark potential in Gribov-Zwanziger approach around deconfinement phase transition

Analysis of Ω(2012) as a molecule in the chiral quark model

Affiliations

Analysis of $Ω (2012)$ as a molecule in the chiral quark model