We present the first determination of transverse momentum dependent (TMD) photon densities with the Parton Branching method. The photon distribution is generated perturbatively without intrinsic photon component. The input parameters for quarks and gluons are determined from fits to precision measurements of deep inelastic scattering cross sections at HERA. The TMD densities are used to predict the mass and transverse momentum spectra of very high mass lepton pairs from both Drell-Yan production and Photon-Initiated lepton processes at the LHC.

中文翻译：

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使用Parton分支法测定共线和TMD光子密度

我们用Parton分支方法提出了对横向动量依赖性（TMD）光子密度的首次确定。光子分布是在没有固有光子成分的情况下扰动地生成的。夸克和胶子的输入参数由HERA处的深层非弹性散射截面的拟合到精确测量确定。TMD密度用于从大型强子对撞机的Drell-Yan生产和光子引发的轻子过程中预测非常高质量的轻子对的质量和横向动量谱。