Электронный каталог

Статья

Tokarev, M.V.
z-Scaling: Search for Signatures of Phase Transition in Nuclear Matter : [Abstract] / M.V.Tokarev, I.Zborovsky // Физика элементарных частиц и атомного ядра. – 2023. – Т.54, №4. – P.801-802. – URL: http://www1.jinr.ru/Pepan/v-54-4/14_Tokarev_ann_w.pdf.

We present results of analysis of hadron production in p + p and Au + Au collisions obtained in the framework of z-scaling in searching for signatures of a phase transition in nuclear matter. The approach allows systematic analysis of experimental data on inclusive cross sections over a wide range of collision energies, multiplicity densities, transverse momenta, and angles of various particles. The concept of the z-scaling is based on the principles of self-similarity, locality and fractality reflecting the general features of hadron interactions. The scaling function ψ(z) depends on the self-similarity variable z and is expressed by the inclusive cross section and the multiplicity density of produced particles. The variable z is a function of the momentum fractions x1 and x2 of the colliding objects carried by interacting hadron constituents and depends on the fractions ya and yb of the scattered and recoil constituents carried by the inclusive particle and its recoil counterpart. There are three model parameters in the z-scaling approach. The structure of the colliding objects and fragmentation processes is characterized by the structural and fragmentation fractal dimensions δ and ε, respectively. The produced medium is described by a “specific heat” c. The discontinuity of the model parameters is discussed from the point of view of searching for phase transitions in nuclear matter.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами
Бюллетени = 35/023