Sartre事件生成器中小x eA碰撞的包容性衍射
Inclusive diffraction in eA at small x with the Sartre event generator
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中文总结 AI 辅助
该工作扩展Sartre事件生成器，实现小x下质子与核靶的包容性衍射DIS，利用IPsat/IPnonsat偶极子振幅及Pythia强子化，与实验比较并为EIC提供预测。
中文摘要 AI 辅助
我们介绍了Sartre事件生成器的一个扩展，该扩展在质子靶和核靶的小x条件下实现了包容性衍射深度非弹性散射。计算在色偶极子图像中进行，使用Sartre在独占过程中也采用的IPsat和IPnonsat偶极子振幅，并包括横向和纵向q qbar贡献以及在大M_X时占主导的q qbar g福克态。部分子衍射系统通过Pythia进行强子化，给出完全独占的强子最终态。我们将结果与H1和ZEUS的包容性衍射测量以及衍射D*产生进行比较，并为电子-离子对撞机提出预测。这使得Sartre成为唯一为ep和eA碰撞提供小x包容性衍射DIS的事件生成器。
英文摘要
We present an extension of the Sar\emph{t}re event generator that implements inclusive diffractive deep inelastic scattering for both proton and nuclear targets at small $x$. The calculation is performed in the colour-dipole picture using the IPsat and IPnonsat dipole amplitudes that Sar\emph{t}re also employs for exclusive processes, and includes the transverse and longitudinal $q\bar q$ contributions together with the $q\bar qg$ Fock state that dominates at large $M_X$. The partonic diffractive system is hadronised with \pythia, giving fully exclusive hadronic final states. We compare to the combined H1 and ZEUS inclusive diffractive measurements and to diffractive $D^*$ production, and present predictions for the Electron-Ion Collider. This makes Sar\emph{t}re the only event generator providing inclusive diffractive DIS in small-$x$ for both $ep$ and $eA$ collisions.
