在PANDA产生粲重子$Λ_c(2880)$的初步估计
First estimate of producing the charmed baryon $Λ_c(2880)$ at PANDA
摘要：
在目前的工作中，我们探讨了生产潜力的$Λ_c(2880)^+$在熊猫。利用$J^P=\frac{5}{2}^+$对$Λ_c(2880)^+$的赋值，我们计算了$p\bar{p}\to Λ_c^-Λ_c(2880)^+$的微分截面和全截面.我们还进行Dalitz图分析，并给出了过程$p\bar{p}\to Λ_c^-pD^0$的$pD^0$不变质谱分布，其中考虑了信号和背景的贡献。我们的数值计算结果表明，生产的$Λ_c(2880)^+$可以达到约20 $μ$ b。如果采用PANDA的设计光度（$2\times10^{32}~\mbox{cm}^{-2}\mbox{s}^{-1}$），每天可以积累$pD^0$重建的$10^7$事件。
英文摘要：
In the present work we explore the production potential of $Λ_c(2880)^+$ at PANDA. With the $J^P=\frac{5}{2}^+$ assignment to $Λ_c(2880)^+$, we calculate the differential and total cross sections of $p\bar{p}\to Λ_c^-Λ_c(2880)^+$. We also perform the Dalitz plot analysis and give the $pD^0$ invariant mass spectrum distribution of the process $p\bar{p}\to Λ_c^-pD^0$, where the signal and background contributions are considered. Our numerical results indicate that the production of $Λ_c(2880)^+$ may reach up to about 20 $μ$b. About $10^7$ events from the reconstruction of $pD^0$ can be accumulated per day, if taking the designed luminosity ($2\times10^{32}~\mbox{cm}^{-2}\mbox{s}^{-1}$) of PANDA.
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