Multigluon Correlations and Evidence of Saturation from Dijet Measurements at an Electron-Ion Collider.
Multigluon Correlations and Evidence of Saturation from Dijet Measurements at an Electron-Ion Collider.
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DOI：
10.1103/physrevlett.124.112301
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发表时间：
2019-12
影响因子：
8.6
通讯作者：
H. Mäntysaari;N. Mueller;F. Salazar;B. Schenke
中科院分区：
文献类型：
--
作者：
H. Mäntysaari;N. Mueller;F. Salazar;B. Schenke
在色玻璃凝聚有效场理论下，研究了电子-质子和电子-核碰撞中双喷流的产生。我们计算了平均双喷流横向动量P和反冲动量Δ的微分双喷流截面，以及P和Δ之间相对角度的各向异性。我们的结果涵盖了一个更大的运动学范围比以前的计算中进行的相关极限近似，其中假设，|P| ≫| Δ|.我们在其适用范围内验证了这种近似，并量化了其失败，|P| ≲| Δ|.我们还预测了与相关极限近似的显著目标相关偏差，|P|>| Δ|和|P|它提供了在未来的电子-离子对撞机上直接测试胶子饱和度和获得多胶子分布的方法。
We study inclusive and diffractive dijet production in electron-proton and electron-nucleus collisions within the color glass condensate effective field theory. We compute dijet cross sections differentially in both mean dijet transverse momentum P and recoil momentum Δ, as well as the anisotropy in the relative angle between P and Δ. Our results cover a much larger kinematic range than accessible in previous computations performed in the correlation limit approximation, where it is assumed that |P|≫|Δ|. We validate this approximation in its range of applicability and quantify its failure for |P|≲|Δ|. We also predict significant target-dependent deviations from the correlation limit approximation for |P|>|Δ| and |P|≲Q_{s}, which offers a straightforward test of gluon saturation and access to multigluon distributions at a future Electron-Ion Collider.