论文标题
照亮质子中带电的瘦素
Illuminating the charged leptons in the proton
论文作者
论文摘要
质子结构的描述至关重要，以描述LHC的标准模型过程以及搜索新物理学。量子波动意味着质子内的光子和瘦素的存在，这些光子和瘦素在parton分布函数（PDF）中。尽管Lepton PDF预计很小，但其存在仍开放了新的生产机制。为了探索LHC上的Lepton诱导的过程，需要精确确定质子的Leptonic含量。在本文中，我们建议通过研究LHC的超递质质子 - 核碰撞中的QED Compton散射来限制质子内部带电的瘦素的含量。我们估计了Lepton PDF的不同模型和不同的Lepton风味的总横截面和相关分布。我们证明，对此过程的未来实验分析是可行的，并且可以用来限制质子内电子，muon和taus的含量。
The description of the structure of proton is fundamental in order to describe the standard model processes at the LHC as well as for the searching of New Physics. Quantum fluctuations imply the presence of photons and leptons inside the proton, which admit a parton distribution function (PDF). Although the lepton PDFs are expected to be small, its presence opens new production mechanisms. In order to explore the lepton - induced processes at the LHC, a precise determination of the leptonic content of the proton is needed. In this paper we propose to constrain the content of charged leptons inside the proton through the study of the QED Compton scattering in ultraperipheral proton - nucleus collisions at the LHC. We estimate the total cross sections and associated distributions considering different models for the lepton PDFs and distinct lepton flavours. We demonstrate that a future experimental analysis of this process is feasible and that it can be used to constrain the content of electrons, muons and taus inside the proton.
