skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High Order Multiplicity Moments

Abstract

We analyze the ratios of cumulants to factorial moments both for data and for the Monte Carlo generated events. For the PYTHIA generated events the moments are investigated both for the full and restricted range of phase-space and for the jets reconstructed from single particle momenta. The results cast doubts on the validity of extended local parton-hadron duality and suggest the possibility of more effective experimental investigations concerning the origin of the observed structure in the dependence of moments on their order.

Authors:
;  [1]
  1. M. Smoluchowski Institute of Physics, Jagellonian University, 30-059 Cracow, ul.Reymonta 4 (Poland)
Publication Date:
OSTI Identifier:
20800070
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 828; Journal Issue: 1; Conference: 35. internationals symposium on multiparticle dynamics; Workshop on particle correlations and femtoscopy, Kromeriz (Czech Republic), 9-17 Aug 2005; Other Information: DOI: 10.1063/1.2197409; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DUALITY; GLUONS; HADRONS; JET MODEL; MONTE CARLO METHOD; MULTIPLICITY; PHASE SPACE; QUARKS; STATISTICAL MODELS

Citation Formats

Fialkowski, K., and Wit, R.. High Order Multiplicity Moments. United States: N. p., 2006. Web. doi:10.1063/1.2197409.
Fialkowski, K., & Wit, R.. High Order Multiplicity Moments. United States. doi:10.1063/1.2197409.
Fialkowski, K., and Wit, R.. Tue . "High Order Multiplicity Moments". United States. doi:10.1063/1.2197409.
@article{osti_20800070,
title = {High Order Multiplicity Moments},
author = {Fialkowski, K. and Wit, R.},
abstractNote = {We analyze the ratios of cumulants to factorial moments both for data and for the Monte Carlo generated events. For the PYTHIA generated events the moments are investigated both for the full and restricted range of phase-space and for the jets reconstructed from single particle momenta. The results cast doubts on the validity of extended local parton-hadron duality and suggest the possibility of more effective experimental investigations concerning the origin of the observed structure in the dependence of moments on their order.},
doi = {10.1063/1.2197409},
journal = {AIP Conference Proceedings},
number = 1,
volume = 828,
place = {United States},
year = {Tue Apr 11 00:00:00 EDT 2006},
month = {Tue Apr 11 00:00:00 EDT 2006}
}
  • The physical mechanism of multihadron production in high-energy nondiffractive collisions is discussed based on the quantum coherent state. A remarkable agreement is obtained between the theoretical results and experimental data in respect of the high-order normalized moments at c.m. energies from 11.5 to 900 GeV for the full phase space. Predictions are made for Fermilab Tevatron, CERN Large Hadron Collider, and Superconducting Super Collider energies by using an empirical formula for {l angle}{ital n}{sub ND}{r angle} and our relation involving the parameter {lambda}.
  • Multiplicity moments within the framework of Reggeon field theory (RFT) are considered. RFT and the renormalization group are reviewed, along with Feynman rules for interacting Pomerons as well as rules for generating unitarity cuts. A variety of prescriptions for calculating multiplicity moments to second order are given as well as explicit expressions for multiplicity moments to first order. As has been noted elsewhere, the first-order moments are in good agreement with suitably corrected experimental results. The second-order corrections are found to be of the same order of magnitude as the first-order corrections, indicating a lack of convergence of the perturbationmore » series. We speculate that the RFT perturbation series for multiplicity moments may in fact be an asymptotic series where higher-order corrections lead to worsening agreement.« less
  • The oscillatory behavior of cumulant moments obtained from the experimental data in {ital pp} collisions and {ital {bar p}}{ital p} collisions is analyzed by the modified negative binomial distribution (MNBD) and the negative binomial distribution (NBD). Both distributions describe well the cumulant moments obtained from the data. This fact shows a sharp contrast to the result in {ital e}{sup +}{ital e}{sup {minus}} collisions, which is described by the MNBD much better than by the NBD. {copyright} {ital 1996 The American Physical Society.}
  • A phenomenological investigation is made of the relation obtained by Weingarten for the multiplicity moments in hadron -hadron interactions. The predictions are compared with moments computed from the experimental data, over a wide energy range, of the reactions pp, pp, pi /sup approximately /p, and K/sup approximately /p. (LBS)