We present some results of analysis of hadron production in $pp$ and $AA$ collisions obtained in the framework of $z$-scaling and discuss a possible signatures of a phase transition in nuclear matter. This approach allows to systematically analyze experimental data on inclusive cross sections over a wide range of the collision energies, multiplicity densities, transverse momenta, and angles...
The results of an analysis of the invariant mass spectra of photon pairs produced in dC, pC
and dCu interactions at momenta of 2.75, 5.5 and 3.83 GeV/c per nucleon respectively, are
presented. Signals in the form of enhanced structures at invariant masses of about 17 and
38 MeV/c2 are observed. The results of testing of the observed signals, including the results
of the Monte Carlo...
We develop a theoretical description of the production of pions and protons in a new cumulative region of central rapidities and large transverse momenta that can be observed in nuclear collisions by the MPD and SPD detectors of the NICA complex.We suppose that particles in this kinematic region, inaccessible for single nucleon-nucleon interactions, are formed as a result of scattering from...
Characteristics of two forms of the electron-hole (eh) plasma radiation, excited in the graphene under the action of an external time dependent electric field, namely, the quasiclassical radiation of plasma waves and the quantum photon emission in the annihilation channel of interaction of the eh-plasma with a quantized electromagnetic field, are investigated and compared among themselves by...
A.T. D’yachenko$^{1,2}$
$^1$ Emperor Alexander I Petersburg State Transport University, St. Petersburg, 190031, Russia;
$^2$ B.P. Konstantinov Petersburg Nuclear Physics Institute National Research Center “Kurchatov Institute”, Gatchina, 188300, Russia
E-mail: dyachenko_a@mail.ru;
In the development of the nonequilibrium hydrodynamic approach [1, 2], we managed to completely...
The reactions $np \rightarrow np \pi^+ \pi^-$ was studied at the momenta of incident
neutrons $P_0$=3.83 and 5.20 GeV/c. There were calculated the contributions of various
diagrams (both of one-baryon and one-pion exchages) into the cross-section at the
momenta from the threshold up to 12 GeV/c. It was shown that the main contributions into
the reaction $np \rightarrow np \pi^+ \pi^-$ at...
Negative binomial distribution for semi-inclusive distributions gives Hagedorn-Tsallis distribution for inclusive distributions. Radiating sourses counting rule in the hadronization phase, confining and statistical potentials for quarkonium systems in heavy ion scettering processies considered.
