Transverse Momentum Distribution of Secondary Particles in High-Energy Collisions of Protons and Nuclei and the Possibility of Detecting Dark Matter Particles in the Spectra of Soft Photons

The transverse momentum distributions of ? hyperons and D mesons produced in pp and PbPb collisions at ultrarelativistic energies were found in a thermodynamic model. The calculated spectra were compared with the experimental data measured at the Large Hadron Collider. An interpretation by the transverse momentum in pp collisions with consideration for boson X17 with a mass 17 MeV, a new particle, which is a possible candidate for the role of dark matter particles, was proposed for the spectra of soft photons. The masses of dark matter particles were found by combining two-dimensional quantum chromodynamics (QCD) with quantum electrodynamics (QED) in the tube model. An interpretation was proposed for the detection of a boson with a mass of 38 MeV in the spectra of protons emitted in proton interactions with carbon nuclei at a momentum of incident protons of 5.5 GeV/c. Boson X38 with a mass of 38 MeV has a mass close to the boson mass of 35 MeV we found for an electromagnetic tube. Bosons X17 and X38 have been suggested as dark matter particles.