arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2209.05855hep-phhep-ex
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单粲重子的夸克模型产生

Production of single-charmed baryons in a quark model approach

Daniel Iglesias-Ferrero, David R. Entem, Francisco Fernández, Pablo G. Ortega

摘要:

单粲重子$Λ_c^+ Λ_c^-$、$Λ_c^+ Σ_c^-$ +h.c.在一个描述$N\bar N$系统和奇异产生$p\bar p\to Λ\bar Λ$、$Λ\barΣ$和$Σ\barΣ$过程的组分夸克模型的框架下,研究了$p\bar p$碰撞中的$Σ_c^+ Σ_c^-$和$Σ_c^+ Σ_c^-$.对总截面的预测进行了分析,为不同的方法的基础$n\bar n\to c\bar c$过程,介导的一个胶子湮灭图。结果表明,$Λ_c^+Λ_c^-$和$Λ_c^+ Σ_c^-$通道的截面在$10-14$ GeV之间,$1$ nb数量级,而$Σ_c^+Σ_c^-$通道的截面在$0.01-0.1$ nb附近.这一估计可能与他们未来在$\bar{P}$ ANDA等设施中的搜索有关。

英文摘要:

The production of single-charmed baryons $Λ_c^+ Λ_c^-$, $Λ_c^+ Σ_c^-$+h.c. and $Σ_c^+ Σ_c^-$ in $p\bar p$ collisions is studied in the framework of a constituent quark model which has satisfactorily described the $N\bar N$ system and the strangeness production $p\bar p\to Λ\bar Λ$, $Λ\barΣ$ and $Σ\barΣ$ processes. Predictions on the total cross sections are analyzed for different approaches to the underlying $n\bar n\to c\bar c$ process, mediated by one gluon annihilation diagrams. The results indicate that the cross section is of the order of $1$ nb between $10-14$ GeV for $Λ_c^+Λ_c^-$ and $Λ_c^+ Σ_c^-$ channels, and around $0.01-0.1$ nb for $Σ_c^+Σ_c^-$. This estimations can be relevant for their future search in facilities like $\bar{P}$ANDA.

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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