论文标题
高$ | t | $衍射矢量梅森生产在EIC
High $|t|$ diffractive vector meson production at the EIC
论文作者
论文摘要
我们调查了Electron-Proton碰撞中未来电子离子对撞机的大量动量转移$ | T | $在Electron-Proton碰撞中的衍射产生的前景。特别是，我们专注于速度差距大小的测量。用于计算的模型基于Balitsky-Fadin-Kuraev-lipatov扰动Pomeron的衍射交换。提供了横截面的计算以及假设$ 10 \，\ rm fb^{ - 1} $的集成光度的估计值。考虑了两种实验策略。首先，通过观察中央检测器前部的活动来直接测量速度差距大小，其次是在检测器无法测量正向活动的情况下对速度差距的下限。我们发现，可以在EIC上测量横截面对速度差距高达四个单位速度的依赖性。这应该允许由于BFKL交换而预期的1.6横截面的变化。目前的检测器设置可以预测覆盖范围高达3.5个速度。但是，我们得出的结论是，将检测器扩展到更高的速度，例如4.5是可取的，并且为EIC测试快速差距物理学提供了更好的杠杆臂。
We investigate the prospects of the diffractive production of $J/ψ$ mesons at large momentum transfer $|t|$ at the future Electron Ion Collider in electron-proton collisions. In particular, we focus on the measurements of the rapidity gap size. The model used for the calculations is based on the diffractive exchange of the Balitsky-Fadin-Kuraev-Lipatov perturbative Pomeron. Calculations for the cross section and the estimates for the rates assuming integrated luminosity of $10 \, \rm fb^{-1}$ are provided. Two experimental strategies were considered. First, measuring the rapidity gap size directly, by observing the activity in the forward part of the central detector, and second by putting a lower limit on the rapidity gap size in the case when the detector cannot measure forward activity. We find that, it is possible to measure at the EIC the dependence of the cross section on rapidity gap interval up to four units in rapidity. This should allow to measure the change of the cross section by a factor 1.6 expected due to the BFKL exchange. This is possible with the present setup of the detector which projects the coverage up to 3.5 units of rapidity. We conclude however, that the extension of the detector up to higher rapidity, for example to 4.5 would be desirable and provide even better lever arm for testing rapidity gap physics at the EIC.
