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arXiv 1105.3693hep-phhep-exhep-latnucl-exnucl-th
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可能的$Λ_cΛ_c$分子结合态

Possible $Λ_cΛ_c$ molecular bound state

Wakafumi Meguro, Yan-Rui Liu, Makoto Oka

摘要:

在单π交换势模型下研究了可能的$Λ_cΛ_c$强子分子。在这个模型的研究中,重介子交换效应被编码到一个唯象截止参数和附近的$Σ_cΣ_c$,$Σ_cΣ_c^*$和$Σ_c^*Σ_c^*$通道的耦合是必不可少的。从数值计算结果中,我们发现两个$Λ_c$的分子束缚态是可能的,其中张量力起着至关重要的作用,虽然结合能是敏感的截止参数。

英文摘要:

Possible $Λ_cΛ_c$ hadronic molecule is investigated in the one-pion-exchange potential model. In the study with this model, the heavier meson exchange effects are encoded into a phenomenological cutoff parameter and couplings to the nearby $Σ_cΣ_c$, $Σ_cΣ_c^*$, and $Σ_c^*Σ_c^*$ channels are essential. From the numerical results, we find that a molecular bound state of two $Λ_c$'s is possible, where the tensor force plays a crucial role, although the binding energies are sensitive to the cutoff parameter.

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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