PYTHIA simulations indicate that the relative contribution of ICE-like qg scatterings to p_T and eta distributions in pp collisions grows with sqrt(s) and becomes comparable to or larger than DCE at 14 TeV, especially near eta=0.
The influence of the inverse Compton effect on the transverse momentum spectra of particles produced in pp collisions at \sqrt{s}=14 TeV
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abstract
The influence of the QED-analog of the inverse Compton effect on the transverse momentum spectra of particles produced in proton-proton collisions at energies of \sqrt{s}=14 TeV has been investigated. The analysis is based on the quark-gluon scattering process g + q --> g + q, which is the QCD analogue of Compton scattering of a photon on an electron and can lead to energy redistribution between partons, analogous to the mechanism of the inverse Compton effect. Data obtained numerically using the PYTHIA event generator (version 8.316) were used. A total of 5*10^5 proton-proton collisions at \sqrt{s}=14 TeV were analyzed. Events were classified based on the relative energies of the initial quark and gluon, which allowed us to distinguish Compton scattering (DCE) events from inverse Compton scattering (ICE) events. Particle transverse momentum spectra were obtained in the region: p_{T} < 10 GeV/c. The results showed that including inverse Compton scattering events in the analysis leads to a moderate increase in particle yield. The ratio of the spectra for ICE and DCE events remains approximately constant and is about 1.1 within statistical errors. No significant broadening of the transverse momentum spectra is observed. These results show that proton-proton collisions can serve as a reliable baseline for studies of energy redistribution mechanisms in a dense QCD medium, such as quark-gluon plasma.
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Influence of the QCD Analogue of the Inverse Compton Effect on the Transverse Momentum and Pseudorapidity Distributions of Secondary Particles in pp Collisions at sqrt (s)= 30 GeV, 510 GeV, and 14 TeV
PYTHIA simulations indicate that the relative contribution of ICE-like qg scatterings to p_T and eta distributions in pp collisions grows with sqrt(s) and becomes comparable to or larger than DCE at 14 TeV, especially near eta=0.