Different groups publish their results in different formats, have you checked out their respective websites?Elham1990 said:I don't have other groups data
Parton Distribution Functions (PDFs) are mathematical functions that describe how the momentum of a proton is distributed among its constituent partons (quarks and gluons). These functions are crucial in the study of high-energy particle physics to predict the outcomes of collisions in particle accelerators like the Large Hadron Collider (LHC).
PDFs are essential for making predictions using quantum chromodynamics (QCD), the theory of the strong interaction, part of the Standard Model of particle physics. They allow physicists to calculate the cross sections of various scattering processes involving hadrons, which are necessary for interpreting experimental data and for exploring fundamental aspects of matter.
PDFs cannot be calculated directly from first principles due to the complexity of QCD. Instead, they are extracted from experimental data, such as deep inelastic scattering experiments. This involves sophisticated statistical analysis and global fitting techniques that compare theoretical predictions with experimental results across different types of processes and energy scales.
Quantum Chromodynamics (QCD) is the theory that describes the strong interaction between quarks and gluons, which are the fundamental constituents of protons and neutrons. QCD dynamics are central to the behavior of these partons inside the proton, influencing how their momentum and spin are distributed, which in turn defines the shape and evolution of PDFs at different energy scales.
The evolution of PDFs with respect to the energy scale is described by the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equations. These equations predict how PDFs change as the energy scale of the interaction increases, which is crucial for making accurate predictions at different energies, particularly in high-energy particle collisions.