Determination of collinear and TMD photon densities using the Parton Branching method
H. Jung, S. Taheri Monfared, T. Wening
TL;DR
This paper introduces the first determination of TMD photon densities using the Parton Branching method, based on fits to HERA data, and applies these densities to predict high-mass lepton pair spectra at the LHC.
Contribution
It provides the first perturbative determination of TMD photon densities without intrinsic photon components using the Parton Branching method.
Findings
TMD photon densities are successfully determined.
Predictions for lepton pair spectra at the LHC are provided.
The method aligns with deep inelastic scattering data.
Abstract
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.
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