A study of the multiparticle production process in 340 GeV/c π− interactions with emulsion nuclei using the method of rapidity-gap distribution of showers

1991 ◽  
Vol 69 (11) ◽  
pp. 1373-1375
Author(s):  
A. Tufail ◽  
Taiyab Taiyab ◽  
S. Ahmad ◽  
A. R. Khan ◽  
M. Zafar ◽  
...  
Keyword(s):  
Phase Space ◽  
Production Process ◽  
Short Range ◽  
Multiparticle Production ◽  
Π Interactions ◽  
Rapidity Gap ◽  
Space Effect ◽  
Space Effects

The multiparticle production process was investigated using the method of rapidity-gap distribution of showers. To eliminate the phase-space effects from these distributions, pseudoevents were generated. The short-range rapidity-gap correlation observed is greater than expected for a phase-space effect thus giving evidence for the production of clusters in the process.

A study of the rapidity-gap distribution of showers by eliminating phase-space effects

1987 ◽  
Vol 65 (7) ◽  
pp. 790-792 ◽  
Author(s):  
A. Tufail ◽  
H. Ahrar ◽  
S. Ahmad ◽  
M. Zafar ◽  
M. Shafi
Keyword(s):  
Phase Space ◽  
Multiparticle Production ◽  
Rapidity Gap ◽  
Space Effects

The rapidity-gap method has been used to check the formation of clusters in multiparticle production at 50, 340, and 400 GeV∙c−1. Pseudoevents have been generated to eliminate the phase-space effects from the rapidity-gap distributions.

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

Rapidity gap distributions and clustering in multiparticle production

1975 ◽  
Vol 57 (4) ◽  
pp. 369-372 ◽  
Author(s):  
A. Krzywicki ◽  
C. Quigg ◽  
G.H. Thomas
Keyword(s):  
Multiparticle Production ◽  
Rapidity Gap

Rapidity distributions and rapidity–gap correlations in multiparticle production at 50 and 400 GeV/c

1985 ◽  
Vol 63 (4) ◽  
pp. 466-471 ◽  
Author(s):  
S. Ahmad ◽  
H. Ahrar ◽  
M. Zafar ◽  
M. Shafi
Keyword(s):  
Single Particle ◽  
Short Range ◽  
Charged Particles ◽  
Projectile Fragmentation ◽  
Proton Collisions ◽  
Secondary Particles ◽  
Target Mass ◽  
Rapidity Gap ◽  
Rapidity Distributions ◽  
Short Range Correlations

Results on the single particle rapidity distributions and rapidity–gap correlations among hadrons produced in 50 GeV/c π−-meson and 400 GeV/c proton collisions with emulsion nuclei have been investigated. Study of the rapidity distributions reveals that the projectile fragmentation is mass independent and the target fragmentation depends upon the target mass. From the rapidity–gap distributions, we find evidence for short-range correlations that indicate that the secondary particles are produced via cluster formations and each cluster should consist of at least three charged particles.

scholarly journals Intriguing feature of multiplicity distributions

2019 ◽  
Vol 206 ◽  
pp. 03002 ◽  
Author(s):  
Maciej Rybczyński ◽  
Grzegorz Wilk ◽  
Zbigniew Włodarczyk
Keyword(s):  
Production Process ◽  
Oscillatory Behavior ◽  
Multiparticle Production ◽  
Production Mechanism ◽  
Multiplicity Distributions

Multiplicity distributions, P(N), provide valuable information on the mechanism of the production process. We argue that the observed P(N) contain more information (located in the small N region) than expected and used so far. We demonstrate that it can be retrieved by analysing specific combinations of the experimentally measured values of P(N) which we call modified combinants, Cj, and which show distinct oscillatory behavior, not observed in the usual phenomenological forms of the P(N) used to fit data. We discuss the possible sources of these oscillations and their impact on our understanding of the multiparticle production mechanism.

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