LXX International conference "NUCLEUS – 2020. Nuclear physics and elementary particle physics. Nuclear physics technologies"

On the Transverse Momentum Distributions of Secondary Particles in Proton-Proton Collisions in a Thermodynamic Approach at High Energies

13 Oct 2020, 15:55

25m

Online

Oral report Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics. Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics

Speaker

Prof. Alexander D'yachenko (PGUPS, PNPI)

Description

$\bf{A.T. D’yachenko^{1,2}}$
$^{1}$Emperor Alexander I Petersburg State Transport University, St.Petersburg, Russia;
$^{2}$NRC "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia

The transverse momentum distributions for lambda-hyperons are found in the thermodynamic model, which are in agreement with experimental data for proton-proton collisions with energies of $\sqrt{s}$ = 53, 200, 900, and 7000 GeV. The calculated spectra are consistent with the results of the quark-gluon string model [1].
The spectra of soft photons in proton-proton collisions were also considered in the thermodynamic approach at a proton momentum of 450 GeV /c on a fixed target [2], and the possibility of an exess in this experiment for a new particle, X17 boson with a mass of 17 MeV [3,4], was analyzed.

$\bf{References}$
1. O. Piskounova, arXiv: 1908.10759v3 [hep-ph].
2. A. Belogianni et al., Phys. Lett. $\bf{B 548}$, 129 (2002).
3. A.J. Krasznshorkay at al, Phys. Rev. Lett. $\bf{116}$, 042501 (2016).
4. C.Y. Wong, arXiv: 2001.04864v1 [nucl-th]