论文标题
$υ$ photoproutuct on electron-ion对撞机的质子
$Υ$ photo-production on the proton at the Electron-Ion Collider
论文作者
论文摘要
我们提供了一个分散分析，目的是将$υ$ -P散射长度从$γp\到实验。在此框架中，从$γp\到υp$横截面测量值获得$υ$ -P向前散射幅度的虚构部分，并在现有HERA和LHC数据的高能下受到限制。它的实际部分是通过曾经提取的分散关系来计算的，并且减去常数与$υ$ -P散射长度成正比。我们对电子离子对撞机进行$υ$照片制作实验的可行性研究，并讨论在提取$υ$ -P散射长度时可以达到的灵敏度和精度。
We present a dispersive analysis with the aim to extract the $Υ$-p scattering length from $γp \to Υp$ experiments. In this framework, the imaginary part of the $Υ$-p forward scattering amplitude is obtained from $γp \to Υp$ cross section measurements, and is constrained at high energies from existing HERA and LHC data. Its real part is calculated through a once-subtracted dispersion relation, and the subtraction constant is proportional to the $Υ$-p scattering length. We perform a feasibility study for $Υ$ photo-production experiments at an Electron-Ion Collider and discuss the sensitivity and precision that can be reached in the extraction of the $Υ$-p scattering length.
