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arXiv 2204.03050hep-phhep-exhep-lat
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QCD中$Δ^0Δ^0$重子的研究

Investigation of $Δ^0Δ^0$ dibaryon in QCD

H. Mutuk, K. Azizi

摘要:

利用QCD求和规则方法研究了假设的$Δ^0Δ^0$重子态。我们构造了一个标量插值流来提取这个态的质量和衰变常数,同时考虑了各种夸克、胶子和混合真空凝聚的贡献。质量和衰变常数的预测值分别为$m_D=2326^{+114}_{-126} ~\mathrm{MeV}$和$f_D=2.94^{+0.30}_{-0.34}\times 10^{-4} ~\mathrm{GeV}^7$。我们还对$Δ^0Δ^0$重子的结合能和尺寸作了估计。得到的质量值低于$Δ^0Δ^0$阈值,可能是一个很好的实验观测的候选重子。

英文摘要:

We study a hypothetical $Δ^0Δ^0$ dibaryon state by means of QCD sum rule method. We construct a scalar interpolating current to extract the mass and decay constant of this state taking into account contributions of various quark, gluon and mixed vacuum condensates. The predictions for the mass and decay constants are $m_D=2326^{+114}_{-126} ~\mathrm{MeV}$ and $f_D=2.94^{+0.30}_{-0.34}\times 10^{-4} ~\mathrm{GeV}^7$, respectively. We also made an estimation about binding energy and size of the $Δ^0Δ^0$ dibaryon. The obtained mass value is below the $Δ^0Δ^0$ threshold and may be a good dibaryon candidate for being observed experimentally.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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