Speaker
Описание
M. V. Tokarev1, I. Zborovský2
1 Joint Institute for Nuclear Research, Dubna, Russia
2 Nuclear Physics Institute,
Academy of Sciences of the Czech Republic, Řež, Czech Republic
E-mail: tokarev@jinr.ru
Abstract
A brief review of z-scaling concept for analysis of hadron production over a wide range of energy from MeV to TeV is given. The concept based on fundamental principles of self-similarity, locality, and fractality of hadron interactions. It is verified over a wide range of collision energy and transverse momentum for different particle species produced at U70, ISR, RHIC, Tevatron and LHC.
In the z-scaling approach, hadron spectrum is described by scaling function Ψ as a function of self-similarity variable z. The variable is expressed via the momentum fractions of colliding particles and scattered constituents fragmented to produced inclusive particle, the structural and fragmentation fractal dimensions, the multiplicity density of negative particles and a model parameter interpreted as a specific heat of produced medium. Properties of Ψ(z) including energy, angular, multiplicity, and flavor independence are discussed. The shape of the scaling function reveals a power law for low and high z. Microscopic scenario of hadron production in terms of constituent interactions developed within the z-scaling scheme is used to study the dependence of momentum fractions and recoil mass on the collision energy, transverse momentum and mass of produced inclusive particle. Verification of the z-scaling concept and search for new physics at small scales are discussed.
