2017/09/10 by M. M. Islam, Islam, M. M., R. J. Luddy +1 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1709.03172
openalex publication_date 2017/09/10 · openalex created_date 2017/09/25 · openalex updated_date 2026/07/28
Our investigation of high energy \rmpp and \rmp\rmp elastic scattering over the last two decades has led us to consider that the proton has three regions: i) an outer region consisting of a quark-antiquark (\rmq\rmq) condensate ground state (also described as quark-antiquark outer cloud), ii) an inner shell of baryonic charge of size ~0.44 fm, and iii) a core of size ~0.2 fm, where the three valence quarks of a proton with baryonic charges are confined. The proton structure that has emerged leads to four main elastic scattering processes in \rmpp scattering. The first process, which gives rise to diffraction scattering, is due to a glancing collision of the outer cloud of one proton with that of another proton. In a \rmp\rmp glancing collision the corresponding process occurs. The second process involves multiple ω-exchanges. The third process in \rmpp scattering is quark-quark scattering via gluon-gluon interaction. The fourth process - which appears for the first time in our investigation of \rmpp scattering - is a glancing collision at the boundary of a proton cloud with that of the other proton cloud. To describe quantitatively the four processes, their parameters have been determined. For this purpose, we investigated \rmpp 7 TeV dσ/dt measured by the TOTEM Collaboration and \rmp\rmp 1.96 TeV dσ/dt measured by the D0 Collaboration. Our calculated \rmpp elastic dσ/dt at 13 TeV has no oscillations in the large |t| region, in good agreement with the preliminary TOTEM measurements.