DETERMINATION OF DIFFERENTIAL CROSS SECTION OF THE pp → {pp}sπ0 REACTION IN THE ENERGY REGION OF 1.5-2.5 GeV
Baimurzinova B. Tsirkov D.
2021Jagiellonian University
Acta Physica Polonica B, Proceedings Supplement
2021#14Issue 4693 - 698 pp.
The pp → {pp}sπ0, where {pp}s reaction is an unbound interacting proton pair in the 1S0 final state, was investigated at small angles in the beam energy range of Tbeam = 1.5-2.5 GeV. For the pp → {pp}sπ0 reaction, we obtained the angular dependences of the differential cross section dσ/dΩ at forward angles for several energies, the energy dependences of the cross section at zero angle dσ/dΩ(0) and angular slope k of the forward cross section. The obtained results confirm the existence of a second peak in the dσ/dΩ(0) energy dependence for the pp → {pp}sπ0 reaction and allow to estimate its maximum, mass, and width. The change in the sign of the slope k in comparison with the region of the first peak indicates a change in the reaction dynamics at the energies of √s ≈ 2.3-2.6 GeV.
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Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
L.N. Gumilyov Eurasian National University, Nur-Sultan, 010000, Kazakhstan
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Joint Institute for Nuclear Research
L.N. Gumilyov Eurasian National University
Institute of Nuclear Physics
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