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arXiv 2007.11414hep-ph
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$p$ - $A$超周边碰撞中五夸克态共振通道中矢量介子的产生

Production of vector mesons in pentaquark states resonance channel in $p$-$A$ ultraperipheral collisions

Ya-Ping Xie, Xiao-Yun Wang, Xurong Chen

摘要:

质子与原子核的超周边碰撞(UPC)对于研究光生矢量介子和奇异态具有重要意义。利用STARlight程序包研究了相对重离子对撞机(RHIC)上的$p\mbox{-}Au$ UPC和大型强子对撞机(LHC)上的$p$ - $Pb$ UPC中矢量介子在五夸克共振通道中的光生.利用有效拉格朗日方法计算了矢量介子通过五夸克态共振通道的散射截面。给出了RHIC上$p\mbox{-}Au$ UPC和LHC上$p$ - $Pb$ UPC的$J/ψ$和$Υ(1S) $的赝快度和快度分布。结果表明,RHIC是一个比LHC更好的发现五夸克态的平台。此外,$P_{b}(11080)$比$P_c(4312)$更容易识别,因为在RHIC的$t$ -通道中,$Υ(1S)$的背景比$J/ψ$弱。

英文摘要:

Ultraperipheral collisions (UPCs) of protons and nuclei are important for the study of the photoproduction of vector mesons and exotic states. The photoproduction of vector mesons in the pentaquark resonance channel in $p\mbox{-}Au$ UPCs at the Relative Heavy Ion Collider (RHIC) and $p$-$Pb$ UPCs at the Large Hadron Collider (LHC) is investigated by employing STARlight package. The cross sections of vector mesons via pentaquark state resonances channel are obtained using effective Lagrangian method. The pseudo-rapidity and rapidity distributions of $J/ψ$ and $Υ(1S) $ are given for $p\mbox{-}Au$ UPCs at the RHIC and $p$-$Pb$ at the LHC. It is found that the RHIC is a better platform for discovering the pentaquark states than the LHC. Moreover, $P_{b}(11080)$ is easier to identify than $P_c(4312)$ because the background of $Υ(1S)$ is weaker than $J/ψ$ in the $t$-channel at the RHIC.

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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