论文标题
EIC的两极分化$ρ$介子的独家排放和低$ x $的质子含量
Exclusive emissions of polarized $ρ$ mesons at the EIC and the proton content at low $x$
论文作者
论文摘要
我们介绍了一项有关螺旋性振幅和横截面的新研究，用于在EIC中以高能分解为$ρ$介子的独家生产。在此框架内，振幅的分析表达采用了壳冲击因子之间的卷积形式，描绘了（$γ^* \至ρ$）过渡和非扰动密度，被称为不整合的gluon分布（UGD），它编码了有关低$ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $ x $和bfkk的信息。我们提出了一个证据表明，可观察到对传入的虚拟光子和发射的介子的极化敏感，使我们能够区分不同的UGD模型，并在高能量下收集有关质子含量的定量信息。
We present a new study on helicity amplitudes and cross sections for the exclusive production of $ρ$ mesons at the EIC in high-energy factorization. In this framework the analytic expression of amplitudes takes the form of a convolution between an off-shell impact factor, depicting the ($γ^* \to ρ$) transition, and a nonperturbative density, known as Unintegrated Gluon Distribution (UGD) that encodes information about the proton structure at low $x$ and evolves according to the BFKL equation. We come out with an evidence that observables sensitive to the polarizations of the incoming virtual photon and of the emitted meson allow us to discriminate among different UGD models and to gather quantitative information on the proton content at high energies.
