Topological pomeron andA-universality View Full Text


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Article Info

DATE

1989-12

AUTHORS

V. R. Zoller

ABSTRACT

The nuclear mass number dependence of inclusive spectra of secondaries with different quantum numbers in the projectile fragmentation region is analysed. We note that in models with topological pomeron, all the particle spectra fall into two main categories. The first one comprises particles which have a common “valence” quark with the projectile, the second one comprises all the other particles built of “sea” quarks. Thus, in the parameterization\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $$x\frac{{d\sigma }}{{dx}} \propto A^{\alpha (x)} $$ \end{document} the spectra of all “valence” hadrons (p, n, Λ, π+,0,−,K+, ... in thepA-interaction) atx→1 can be characterized by the single exponent αυ =α(x≊1) which differs slightly from αs characterizing the spectra of “sea” hadrons (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $$\bar p, \bar \Lambda $$ \end{document},K−, ... forpA-interactions). This observation is essentially modelindependent and follows only from the topological structure of the pomeron and Gribov's space-time picture of soft hadronic interactions. Deviations from universality due to preasymptotic corrections and coherent particle production processes are estimated. More... »

PAGES

665-671

References to SciGraph publications

  • 1988-06. Topological cross-section in hadron-nucleus collisions and multiple scattering theory in ZEITSCHRIFT FÜR PHYSIK C PARTICLES AND FIELDS
  • 1984-06. Study of theA-dependence of inclusivep,,Λ and production in π±-Nucleus interactions at 30 GeV/c in ZEITSCHRIFT FÜR PHYSIK C PARTICLES AND FIELDS
  • 1980-12. Soft multihadron production from partonic structure and fragmentation functions in ZEITSCHRIFT FÜR PHYSIK C PARTICLES AND FIELDS
  • 1986-03. Inclusive spectra of baryons in the quark-gluon strings model in ZEITSCHRIFT FÜR PHYSIK C PARTICLES AND FIELDS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf01549088

    DOI

    http://dx.doi.org/10.1007/bf01549088

    DIMENSIONS

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