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  • Articles: DFG German National Licenses  (12)
  • 1990-1994  (6)
  • 1980-1984  (6)
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  • Articles: DFG German National Licenses  (12)
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Hadronic energy density in the dual parton model with formation zone intranuclear cascade (1992)
    Springer
    The European physical journal 56 (1992), S. 115-121 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We study the evolution of the hadronic energy and particle density during central nucleus-nucleus collisions at various energies with a Monte Carlo version of the dual parton model. We find at RHIC and at LHC energies energy densities well in the range where the formation of quark gluon plasma is expected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01589714
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Particle production in hadron-nucleus collisions in a multi-chain fragmentation model (1983)
    Springer
    The European physical journal 20 (1983), S. 347-355 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We investigate a multi-chain fragmentation model for particle production in hadron-hardon and hadron-nucleus collisions for all kinds of incident hadrons. The model is implemented using a realistic Monte Carlo model for the fragmentation of quarkantiquark, quark-diquark, and diquark-antidiquark chains into mesons, baryons, and their resonances. We assume that these jets have universal properties which are the same in electron-positron, lepton-hadron, and hadron-hadron collisions. Energy-momentum and all additive quantum numbers are exactly conserved. The model is compared with exclusive as well as inclusive particle-production cross-sections. It is well suited to the study of complete exclusive events and the flavour composition of secondary multiparticle systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01407827
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Dual parton model with complete formation zone intranuclear cascade for the description of particle production in hadron-nucleus and nucleus-nucleus interactions (1991)
    Springer
    The European physical journal 52 (1991), S. 643-653 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a Monte Carlo version of the dual parton model for the description of particle production in hadron-nucleus and nucleus-nucleus collisions with a complete formation zone intranuclear cascade. All generations of secondary interactions are considered. Furthermore, Fermi motion and Pauli's principle are introduced to control the generation of low-energy nucleons. The model is compared with rapidity distributions and grey-particle production in hadron-nucleus interactions as well as with results from nucleus-nucleus collisions. Within the DPM the number of chains with sea-quarks at their ends grows with the complexity of the target and/or projectile nuclei as well as with the collision energy. We discuss this increase of chain-end sea-quarks as a mechanism for strangeness enhancement within the model. Furthermore we study the properties of the model at the energies of future heavy ion colliders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01562339
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Hadron production at supercolliders in the two component dual parton model and the smallx behaviour of the structure functions (1992)
    Springer
    The European physical journal 54 (1992), S. 683-690 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Models which contain a semihard component sensitively depend on the smallx region of the structure functions. Within the framework of a two component dual parton model the effect of recently proposed steeper structure functions is investigated. Drastic changes which appear in the bare scattering amplitudes get significantly reduced by unitarization. For presently available energies the semihard component seems still too small to allow for clear cut conclusions about the correctness of the various proposed structure functions. However, the predictions for SSC or LHC energies depend on the choice of the structure function quite decisively, resulting in a substantial uncertainty in the extrapolations. The uncertainty is reduced to a less worrisome level if the consideration is restricted to the strongly shadowed parton distribution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01559499
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Multiparticle correlations in a two component dual parton model (1991)
    Springer
    The European physical journal 51 (1991), S. 99-105 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The dual parton model (DPM) describes soft and semihard multiparticle production. The presented version of the DPM includes soft and hard mechanisms as well as diffractive processes. The model is formulated as a Monte-Carlo event generator. We calculate, in the energy range of the hadron colliders, particle ratios as function of the transverse momentum, the rise of the average transverse momenta with the charged multiplicity, forward-backward correlations, short range correlations and factorial moments as function of the size of the pseudorapidity bins. For most of these quantities we find a reasonable agreement with experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01579565
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The single diffractive component in hadron-hadron collisions within the two-component Dual Parton model (1993)
    Springer
    The European physical journal 59 (1993), S. 481-488 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The single diffractive component in hadronhadron interactions is studied in the two-component Dual Parton Model. We distinguish high mass single diffraction represented by a triple-Pomeron exchange and low mass single diffraction described via a two channel eikonal method. The calculated single diffractive cross sections, and the distributions agree quite well with data from collider and fixed target experiments. The fit of the model parameters to cross section data gives a extrapolation of the total, elastic, and single diffractive cross sections to supercollider energies which depends on the parton structure functions used for the minijet component.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01498629
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Polarization at high transverse momentum through weak interaction and its interference with strong interaction (1980)
    Springer
    The European physical journal 6 (1980), S. 317-327 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract At transverse momenta of typical 20 to 40 GeV/c the hard scattering of quarks leads to partially polarized jets. The responsable mechanisms areW ± andZ 0 exchange and their interference with gluon exchange. For the jet fragmentation we employ a model with favoured and disfavoured fragmentation according to broken SU (6). For vector mesons and Λ particles a modest polarization is predicted of the order up to ∼8%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01474806
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Single diffractive hadron-nucleus interactions within the dual parton model (1994)
    Springer
    The European physical journal 62 (1994), S. 329-336 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Single diffractive hadron-nucleus interactions are studied within the framework of the dual parton model. Introducing a diffractive component into the Monte-Carlo event generator DTUNUC we investigate particle production and the dependence of the diffractive cross section on the atomic number of the target nucleus. A comparison of the numerical results with recent experimental data is presented. We furthermore introduce hadronic cross section fluctuations and discuss their influence on diffractive proton-nucleus cross sections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01560247
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Production of polarized baryons in polarized and unpolarizede + e − collisions (1982)
    Springer
    The European physical journal 12 (1982), S. 253-262 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Polarized and unpolarizede + e − annihilation is considered in lowest order at energies 30–150 GeV taking γ andZ 0 exchange in the standardSU(2)×U(1) model into account. The fragmentation of polarized quarks into polarized baryons is described by two kinds of fragmentation functions; the first is based onSU(6) weights and empirical expressions for favoured and disfavoured fragmentation; the second is based upon a Monte Carlo model of the chain decay including helicities of quarks and hadrons. From the cross sections for $$e^ + e^ - \to q\bar q$$ and the fragmentation functions we obtain predictions for the baryon polarization as function of the collision energy and of kinematical variables.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01558264
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Particle production in hadron-hadron collisions at collider energies in an exclusive multi-string fragmentation model (1984)
    Springer
    The European physical journal 23 (1984), S. 67-76 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Particle production in soft hadron-hadron collisions at collider energies is investigated in a two-step dual parton model. In the initial collision color-singlets or strings of hadronic matter are formed from constituents of the incident particles. These strings subsequently decay into chains of hadrons, analogously to the $$q\bar q$$ system in low energye + e − physics. Relying on the Monte-Carlo method we generate exclusive events and evaluate quantities of interest which include inclusive and semi-inclusive pseudorapidity spectra, topological cross-section, correlations and charge transfer distributions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01558042
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    Paper (German National Licenses)
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