Some interesting results on compound multiplicity in 12C-nucleus reactions at 4.5 A GeV/c

1997 ◽  
Vol 75 (8) ◽  
pp. 549-557 ◽  
Author(s):  
M S Khan ◽  
Sk S Ali ◽  
P Singh ◽  
H Khushnood ◽  
A R Ansari ◽  
...  
Keyword(s):  
Compound Multiplicity

SOME CHARACTERISTICS OF THE COMPOUND MULTIPLICITY IN HIGH-ENERGY NUCLEUS–NUCLEUS INTERACTIONS

2011 ◽  
Vol 20 (08) ◽  
pp. 1735-1754 ◽  
Author(s):  
M. MOHERY ◽  
M. ARAFA
Keyword(s):  
Experimental Data ◽  
Impact Parameter ◽  
Mass Number ◽  
Multiplicity Distribution ◽  
High Energy ◽  
Projectile Nucleus ◽  
Target Mass ◽  
Compound Multiplicity ◽  
Multiplicity Distributions ◽  
The Impact

The present paper deals with the interactions of 22 Ne and 28 Si nuclei at (4.1–4.5)A GeV /c with emulsion. Some characteristics of the compound multiplicity nc given by the sum of the number of shower particles ns and grey particles ng have been investigated. The present experimental data are compared with the corresponding ones calculated according to modified cascade evaporation model (MCEM). The results reveal that the compound multiplicity distributions for these two reactions are consistent with the corresponding ones of MCEM data. It can also be seen that the peak of these distributions shifts towards a higher value of nc with increasing projectile mass. It may further be seen that the compound multiplicity distributions becomes broader with increasing target size and its width increases with the size of the projectile nucleus. In addition, it has been found that the MCEM can describe the compound multiplicity characteristics of the different projectile, target and the correlation between different emitted particles. The values of average compound multiplicity increase with increasing mass of the projectile. Furthermore, it is observed that while the value of 〈nc〉 depends on the mass number of the projectile Ap and the target mass number At, the value of the ratio 〈nc〉/D(nc) seems to be independent of Ap and At. The impact parameter is found to affect the shape of the compound multiplicity distribution. Finally, the dependence of the average compound multiplicity on the numbers of grey and black particles, and the sum of them, is obvious. The values of the slope have been found to be independent of the projectile nucleus.

Evidence of self-affine fluctuations of compound multiplicity distributions in nucleus-nucleus interactions at4.5AGeV

2004 ◽  
Vol 69 (1) ◽  
Author(s):  
Dipak Ghosh ◽  
Argha Deb ◽  
Pasupati Mandal ◽  
Subrata Biswas ◽  
Jayita Ghosh
Keyword(s):  
Compound Multiplicity ◽  
Multiplicity Distributions

Features of compound multiplicity in heavy-ion interactions at 4.5AGeV/c

1991 ◽  
Vol 44 (4) ◽  
pp. 1555-1558 ◽  
Author(s):  
Tauseef Ahmad ◽  
M. Irfan
Keyword(s):  
Heavy Ion ◽  
Ion Interactions ◽  
Compound Multiplicity

Non-statistical Fluctuation of Compound Multiplicity in Nucleus-Nucleus Interactions: Evidence of Strong Intermittency

2002 ◽  
Vol 19 (10) ◽  
pp. 1436-1438 ◽  
Author(s):  
Dipak Ghosh ◽  
Argha Deb ◽  
Pasupati Mandal ◽  
Subrata Biswas ◽  
Keya Chattopadhyay ◽  
...  
Keyword(s):  
Statistical Fluctuation ◽  
Compound Multiplicity

Self-affine fluctuations of pions and protons and nonthermal phase transition in hadron–nucleus interactions

2008 ◽  
Vol 86 (12) ◽  
pp. 1449-1459 ◽  
Author(s):  
D Ghosh ◽  
A Deb ◽  
S Pal ◽  
J Ghosh
Keyword(s):  
Phase Transition ◽  
Phase Space ◽  
Production Process ◽  
Hurst Exponent ◽  
Factorial Moment ◽  
Multiparticle Production ◽  
Two Dimensional ◽  
Dimensional Phase Space ◽  
Compound Multiplicity ◽  
Multiplicity Distributions

The paper reports a study revealing self-affine fluctuations in pion, proton, and compound multiplicity (of pions combined with protons) spectra obtained from the interactions of 350 GeV pions with AgBr nuclei. The study is performed in the transformed two-dimensional phase space of the emission and azimuthal angles using the factorial moment methodology and the concept of the Hurst exponent. Evidence of a nonthermal phase transition is obtained for self-affine fluctuations of pions along with an indication for such a regime to be seen in similar fluctuations of proton and compound multiplicity distributions. The study bridges the anisotropic nature of the multiparticle production process and an evidence of the nonthermal phase transition with similar earlier findings from hadron–hadron and nucleus–nucleus interactions and shows the same effects to be peculiar features of the multiplicity distributions of the different species of particles produced. All this brings important information about the underlying dynamics of the hadroproduction process.PACS Nos.: 25.80.Hp, 24.60.Ky, 13.85.–t

EVIDENCE OF FRACTAL BEHAVIOR OF PIONS AND PROTONS IN HIGH ENERGY INTERACTIONS — AN EXPERIMENTAL INVESTIGATION

Fractals ◽  
2005 ◽  
Vol 13 (04) ◽  
pp. 325-339 ◽  
Author(s):  
DIPAK GHOSH ◽  
ARGHA DEB ◽  
SITARAM PAL ◽  
PRABIR KUMAR HALDAR ◽  
SWARNAPRATIM BHATTACHARYYA ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Specific Heat ◽  
Multiplicity Distribution ◽  
Azimuthal Angle ◽  
Factorial Moment ◽  
Fractal Dimensions ◽  
High Energy ◽  
Emission Angle ◽  
Compound Multiplicity ◽  
Multifractal Behavior

Different fractal methods (Factorial moment, Takagi moment) have been used for the analysis of fractal behavior of multiparticle production in π-- AgBr interaction at 350 GeV/c of compound multiplicity distribution in emission angle (cos θ) space and azimuthal angle (ϕ) space. The generalized fractal dimensions Dq are determined according to two methods. Results indicate multifractal behavior in compound multiplicity distribution. From the knowledge of Dq, the multifractal specific heat is calculated. Results are compared with the corresponding results of shower multiplicity.

scholarly journals A Study of Pion-Nucleus Interactions in terms of Compound Particles

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Tufail Ahmad
Keyword(s):  
Multiplicity Distribution ◽  
Charged Particles ◽  
Mean Value ◽  
Shower Particle ◽  
Particle Multiplicity ◽  
Compound Multiplicity ◽  
The Mean ◽  
Multiplicity Distributions ◽  
Distribution Shifts ◽  
Compound Particle

We report some results on the compound multiplicity distribution at 340 GeV/c π- nucleus interactions. Compound multiplicity distribution is found to depend on the target size and the distribution becomes broader. The peak of the distribution shifts towards higher values of the compound particle multiplicity. Mean compound multiplicity is found to vary linearly with grey, heavy, and shower particle multiplicity. Correlations between different particle multiplicities have been studied in detail. Dispersion of compound multiplicity distributions and its ratio with the mean value is observed to obey a linear relationship with different particle multiplicities except for shower particles where dispersion is almost independent of shower particles. Mean normalized multiplicity has also been studied in terms of created charged particles.

Evidence of Intermittency in Compound Multiplicity and High-Energy Hadron-Nucleus Interactions

1995 ◽  
Vol 29 (7) ◽  
pp. 521-524 ◽  
Author(s):  
Dipak Ghosh ◽  
Supriya Halder ◽  
Debashis Halder ◽  
Argha Deb
Keyword(s):  
High Energy ◽  
Compound Multiplicity ◽  
Energy Hadron

Evidence of Multifractal Structure of Compound Multiplicity Distribution in24Mg-AgBr Interactions at 4.5AGeV

2003 ◽  
Vol 53 (12) ◽  
pp. 1173-1181 ◽  
Author(s):  
Dipak Ghosh ◽  
Argha Deb ◽  
Subrata Biswas ◽  
Pasupati Mandal ◽  
Jayita Ghosh ◽  
...  
Keyword(s):  
Multiplicity Distribution ◽  
Compound Multiplicity
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