Rapidity Gap Probability Research Articles

Signature of void probability scaling in jet-like events in 16O–AgBr interactions at 60 GeV/n

This paper presents the analysis of jet-like and ring-like events to study the rapidity gap probability of pions produced in 16O–AgBr interactions at 60 A GeV. The study reveals the scaling behavior of the void probability for the jet-like events. However for ring-like events, the rapidity gap probability does not obey the scaling law.

Signature of void probability scaling in multipion production at a few GeV∕nucleon

A study of rapidity gap probability has been carried out in $^{16}\mathrm{O}\text{\ensuremath{-}}\text{AgBr}$ interactions at $2.1A\phantom{\rule{0.3em}{0ex}}\text{GeV}$. The study reveals scaling behavior of the void probability. This analysis also confirms the validity of the linked-pair approximation for the $N$-particle cumulant correlation functions in the low energy regime.

Void probability scaling in ultra-relativistic heavy ion interactions

The study of rapidity gap probability has been carried out with 32S–AgBr interactions at 200 A GeV. The study reveals the scaling behaviour of the void probability in the central rapidity domain which hints towards the outer space–inner space connection. This also confirms the validity of the linked-pair approximation for the N-particle cumulant correlation functions.

Diffraction in hadron-hadron interactions

Results on soft and hard diffraction in pp and p p collisions are reviewed with emphasis on factorization and scaling properties of differential cross sections. While conventional factorization breaks down at high energies, a scaling behavior emerges, which leads to a universal description of diffractive processes in terms of a (re)normalized rapidity gap probability distribution.

From HERA to the Tevatron: a scaling law in hard diffraction

Results on hard diffraction from CDF are reviewed and compared with predictions based on the diffractive structure of the proton measured in deep inelastic scattering at HERA. The predictions are generally larger than the measured rates by a factor of ∼ 6, suggesting a breakdown of conventional factorization. Correct predictions are obtained by scaling the rapidity gap probability distribution of the diffractive structure function to the total integrated gap probability. The scaling of the gap probability is traced back to the pomeron flux renormalization hypothesis, which was introduced to unitarize the soft diffraction amplitude.

Evidence of scaling of void probability in nucleus-nucleus interactions at few GeV energy

The rapidity gap probability in the ${}^{24}\mathrm{M}\mathrm{g}\ensuremath{-}\mathrm{A}\mathrm{g}\mathrm{B}\mathrm{r}$ interaction at $4.5\mathrm{GeV}/c/\mathrm{nucleon}$ has been studied in detail. The data reveal scaling behavior of the void probability in the central rapidity domain which confirms the validity of the linked-pair approximation for the $N$-particle cumulant correlation functions. This scaling behavior appears to be similar to the void probability in the Perseus-Pisces supercluster region of galaxies.

Rapidity gaps and scaling in high energy interactions.

The rapidity gap probability is investigated in varying symmetric bin sizes in proton-nucleus interactions at 800 GeV. It shows a scaling behavior and confirms the linked pair approximation for the {ital n}-particle cumulant correlation functions to high order. A comparison of the scaled rapidity gap probability is made with the negative binomial distribution. We also interpret the rapidity gap probability in the clan production model of hadronization and reanalyze the clan parameters in its light. {copyright} {ital 1996 The American Physical Society.}

Negative binomial distributions and clan model in proton-nucleus interactions

Experimental results on multiplicity distributions in different pseudorapidity intervals of charged shower particles produced in proton-AgBr and proton-CNO collisions at 800 GeV are presented. The different distributions are described well by the negative binomial form. We successfully interpret our results in terms of the clan model. The values of the rapidity gap probability in terms of average number of clans in different pseudorapidity intervals are also determined.

Clan structure analysis and rapidity gap probability

Clan structure analysis in rapidity intervals is generalized from negative binomial multiplicity distribution to the wide class of compound Poisson distributions. The link of generalized clan structure analysis with correlation functions is also established. These theoretical results are then applied to minimum bias events and evidentiate new interesting features, which can be inspiring and useful in order to discuss data on rapidity gap probability at TEVATRON and HERA.

Analysis of the rapidity gap probability at CERN collider energies

The rapidity gap probability, i.e., the probability of detecting no particles in a given rapidity interval is investigated in proton-antiproton collisions at CERN collider energies. A scaling behaviour is found in the central rapidity domain, similar to the scaling of the void probability in the Perseus-Pisces supercluster region of galaxies. This observation confirms that the recently proposed linked-pair approximation for the N-particle cumulant correlation functions holds valid to high order with linking coefficients slightly smaller than the negative binomial values. In the outer region of rapidity deviations are found from the scaling law which possibly is caused by the violation of translation invariance of the correlation functions. The correspondence to the clan production picture of hadronization is outlined: it is shown that the clan-model parameters can be obtained directly from the “hole probability”.