Multifractal Crossover in the Multiplicative Processes

Fractals ◽  
1997 ◽  
Vol 05 (04) ◽  
pp. 661-663
Author(s):  
A. Bershadskii
Keyword(s):  
Experimental Data ◽  
Multiplicity Distribution ◽  
Effective Capacity ◽  
Recent Experimental Data ◽  
Space Filling ◽  
High Energies ◽  
Capacity Dimension ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Multiplicative Processes

It is shown, using multifractal data on space-filling bearings, that there exists a multifractal crossover to an effective 'capacity' dimension in some multiplicative processes. This result is then used to interpret recent experimental data on multifractal structure of multiplicity distribution in electron-positron annihilation at high energies.

RADIATIVE DECAYS OF PSEUDOSCALAR (P) AND VECTOR (V) MESONS AND THE PROCESSES e+e- → ηρ(ω) AND e+e- → ϕη(η')

2009 ◽  
Vol 24 (14) ◽  
pp. 2629-2638 ◽  
Author(s):  
YU. M. BYSTRITSKIY ◽  
E. A. KURAEV ◽  
M. SEČANSKÝ ◽  
M. K. VOLKOV
Keyword(s):  
Experimental Data ◽  
Center Of Mass ◽  
Radiative Decays ◽  
Recent Experimental Data ◽  
Vector Mesons ◽  
Quark Confinement ◽  
Center Of Mass Energy ◽  
Njl Model ◽  
Electron Positron Annihilation ◽  
Electron Positron

Radiative decays of pseudoscalar and vector mesons are calculated in the frames of chiral Nambu–Jona-Lasinio (NJL) model. We use triangle quark loops of anomalous type. During the evaluation of this loop integrals we used two methods. In the first method we neglect the dependence of external momenta. In that case we reproduce the Wess–Zumino–Witten terms of effective chiral meson Lagrangian. In the second method we take into account the momenta dependence of loop integrals omitting their imaginary part. This enables us to take into account quark confinement. The application of both methods are in qualitative agreement with each other and with experimental data. The second method allows us to describe the electron–positron annihilation with production pseudoscalar and vector mesons in center-of-mass energy range from 1 to 5 GeV. Comparisons with the recent experimental data are presented.

Tsallis nonextensive entropy and the multiplicity distributions in high energy leptonic collisions

2016 ◽  
Vol 25 (06) ◽  
pp. 1650041 ◽  
Author(s):  
S. Sharma ◽  
M. Kaur ◽  
Sandeep Kaur
Keyword(s):  
Experimental Data ◽  
Multiplicity Distribution ◽  
High Energy ◽  
New Approach ◽  
High Energies ◽  
Nonextensive Entropy ◽  
Tsallis Distribution ◽  
Multiplicity Distributions ◽  
Better Than

The nonextensive behavior of entropy is exploited to explain the regularity in multiplicity distributions in [Formula: see text] collisions at high energies. The experimental data are analyzed by using Tsallis [Formula: see text]-statistics. We propose a new approach of applying Tsallis [Formula: see text]-statistics, wherein the multiplicity distribution is divided into two components; two-jet and multijet components. A convoluted Tsallis distribution is fitted to the data. It is shown that this method gives the best fits which are several orders better than the conventional fit of Tsallis distribution.

OSCILLATORY MOMENTS IN LEE-YANG ZEROS AND LHC PREDICTIONS

2009 ◽  
Vol 24 (18n19) ◽  
pp. 3447-3454 ◽  
Author(s):  
A. DEWANTO ◽  
A. H. CHAN ◽  
Z. H. LIM ◽  
C. H. OH
Keyword(s):  
Experimental Data ◽  
Quantum Chromodynamics ◽  
Generating Function ◽  
Multiplicity Distribution ◽  
High Energy ◽  
Energy Collision ◽  
Oscillatory Behaviour ◽  
High Energy Collision ◽  
Electron Positron ◽  
Scattering Events

We study the moments of multiplicty distribution and its relation to the Lee-Yang zeros of the generating function in electron-positron and hadron-hadron high energy collision. Our work shows that GMD moments can reproduce the oscillatory behaviour as shown in the experimental data and predicted by quantum chromodynamics at preasymptotic energy, while it can also be used to distinguish electron-positron (e+e-) multiplicity data from hadron-hadron (pp and [Formula: see text]) multiplicity. Furthermore, there seems to be a link between the development of shoulder structure in the multiplicity distribution and the development of ear structure in the Lee-Yang zeros. We predict that these structures is going to be very obvious at 14 TeV. We argue that the development of these structures indicates an ongoing transition from quark-dominated soft scattering events to gluon-dominated semihard scattering events.

STRING FRAGMENTATION MODEL AND INCLUSIVE PRODUCTION OF K MESONS

1992 ◽  
Vol 07 (16) ◽  
pp. 3665-3690
Author(s):  
MOHAMMAD SALEEM ◽  
MUHAMMAD RAFIQUE
Keyword(s):  
Experimental Data ◽  
Positron Annihilation ◽  
Cross Section ◽  
Inclusive Production ◽  
Fragmentation Model ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
The Mean ◽  
K Mesons ◽  
String Fragmentation

An account of the inclusive production of K mesons in electron-positron annihilation is given. The most recent measurements on the cross section are exhibited and compared with the predictions of the Lund model. The model gives a satisfactory agreement with the experimental data. The results from different experiments on cross section, the mean multiplicity per multihadronic event and various other characteristics are found to be consistent.

scholarly journals CROSS-SECTION FOR DOUBLE CHARMONIUM PRODUCTION IN ELECTRON–POSITRON ANNIHILATION AT ENERGY $\sqrt{s} = 10.6 {\rm GeV}$

2011 ◽  
Vol 20 (12) ◽  
pp. 2521-2533 ◽  
Author(s):  
ELIAS MENGESHA ◽  
SHASHANK BHATNAGAR
Keyword(s):  
Experimental Data ◽  
Heavy Quark ◽  
Positron Annihilation ◽  
Cross Section ◽  
Exclusive Process ◽  
Charmonium Production ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Energy Formula ◽  
The Cross

In this work we study the process e++e-→J/Ψ+ηc at energy [Formula: see text] observed recently at B-factories whose measurements were made by Babar and Belle groups. We calculate the cross-section for this process in the Bethe–Salpeter formalism under Covariant Instantaneous Anstaz. To simplify our calculation, the heavy quark approximation is employed in the quark and gluon propagators. In the exclusive process of e+e- annihilation into two heavy quarkonia, the cross-section calculated in this scenario is compatible with the experimental data of Babar and Belle.

Mean normalized shower multiplicity in inelastic hadron–nucleus interactions at high energies and multiparticle production mechanisms

1984 ◽  
Vol 62 (7) ◽  
pp. 639-641
Author(s):  
Dipak Ghosh ◽  
Java Roy ◽  
Madhumita Basu ◽  
Kaushik Sengupta ◽  
Sadhan Naha ◽  
...  
Keyword(s):  
Experimental Data ◽  
Detailed Comparison ◽  
Phase Model ◽  
Multiparticle Production ◽  
Recent Experimental Data ◽  
Dominance Model ◽  
Two Phase ◽  
High Energies ◽  
Wide Range ◽  
Production Mechanisms

This paper presents a detailed comparison of the recent experimental data on mean normalized shower multiplicity in proton–emulsion interactions (22.6–400 GeV/c) with the predictions of current theories of multiparticle production in hadron–nucleus interactions. It has been observed that the data favour both the Fishbane–Trefil two-phase model (TEM) and the Fan diagram dominance model (FDDM) over a wide range of target nuclei, although the agreement with the FDDM seems to be better.

NEW EXPERIMENTAL RESULTS FOR INTERMEDIATE- AND HIGH-ENERGY POLARIZATION ASYMMETRY

1990 ◽  
Vol 05 (16) ◽  
pp. 3089-3123 ◽  
Author(s):  
AKIHIKO YOKOSAWA
Keyword(s):  
Linear Collider ◽  
High Energy ◽  
Experimental Results ◽  
Recent Experimental Data ◽  
Polarization Asymmetry ◽  
Polarized Beams ◽  
High Energies ◽  
Electron Positron ◽  
Experimental Facilities ◽  
Electron Ring Accelerator

We review recent experimental data on polarization asymmetry at intermediate and high energies. We include phenomenological interpretations of the data. In this review we examine the present status of polarization physics at intermediate and high energies. Special attention is directed to controversial experimental results as well as interpretations of the data. Our objective is to contribute toward the planning of future experimental facilities and experiments. For more detailed description and discussion of various experiments and phenomenological interpretations, we provide extensive references. Polarized-beam programs at the SLC (Stanford Linear Collider), HERA (Hadron Electron Ring Accelerator, and EPC (Electron Positron Collider) are not included in this review. Neither do we discuss the technologies of polarized ion sources, polarized targets, polarized beams, or accelerators.

Sign in / Sign up

Export Citation Format

Share Document