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  • 1
    Electronic Resource
    Electronic Resource
    Baryons and antibaryons in an anisotropic universe (1971)
    Springer
    Astrophysics 7 (1971), S. 158-163 
    Details
    ISSN: 1573-8191
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01001075
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  • 2
    Electronic Resource
    Electronic Resource
    The excitation function of Au + Au in the framework of the (2+1)-fluid model (1993)
    Springer
    The European physical journal 346 (1993), S. 251-252 
    Details
    ISSN: 1434-601X
    Keywords: 25.70 Np
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present the excitation function of the reaction Au+Au in the frame work of the recently developed (2+1)-fluid model. In the (2+1)-fluid model, it is assumed that two baryonic fluids formed by the projectile and target nucleons produce a third hadronic fluid via inelastic nucleon-nucleon collisions. For this third fluid we use the equation of state of an interacting hadron gas obtained within the relativistic mean field model, including a first order phase transition. The dependence of the pion mean transverse momentum is investigated to observe the predicted plateau in the region of the phase transition of the hadronic matter to the quark-gluon plasma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01306086
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  • 3
    Electronic Resource
    Electronic Resource
    Antibaryon $$\left( {\bar p,\bar \Lambda } \right)$$ production in relativistic nuclear collisions (1991)
    Springer
    The European physical journal 341 (1991), S. 47-52 
    Details
    ISSN: 1434-601X
    Keywords: 25.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The relativistic meson field theory is used to study the effects of the in-medium interaction on the predicted antibaryon abundancy in hot hadronic matter. It is demonstrated that subtreshold production of antiprotons in high energy heavy ion collisions at Elab =1–2 GeV/nucleon is enhanced by 2–3 orders of magnitude as compared to a standard fireball model estimate. Furthermore, we show that after the inclusion of interactions the anti-hyperon yields, e.g. $$\bar \Lambda $$ /π − are enhanced by about a factor ten. Predicted yields are in excess of the data measured by the NA35 and WA85 collaborations at CERN. The annihilation of antibaryons in surrounding matter at the final stage of the reaction may essentially reduce their abundancy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01281273
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  • 4
    Electronic Resource
    Electronic Resource
    Evolution of pion phase-space density and Bose-enhancement effects in high-energy heavy-ion collisions (1992)
    Springer
    The European physical journal 342 (1992), S. 309-317 
    Details
    ISSN: 1434-601X
    Keywords: 25.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The evolution of the pion phase-space density in the ultrarelativistic heavy-ion collision is investigated on the basis of an analytical solution of the kinetic equation. The rate of pion production is treated as a superposition of binary collisions of the projectile and target nucleons. It is calculated in accordance with the experimentalNN→πX cross section, neglecting the deceleration of nuclei during their interpenetration. Very large occupation numbers of the lowp T -pions in the central rapidity region are predicted for typical heavy-ion collisions at Brookhaven and CERN energies. The role of the Boseenhancement of pion production is discussed. It is shown that this effect may be essentially suppressed due to the finite formation time of pions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291515
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  • 5
    Electronic Resource
    Electronic Resource
    Mechanisms of fragment production in heavy-ion reactions at intermediate energies (1993)
    Springer
    The European physical journal 345 (1993), S. 297-303 
    Details
    ISSN: 1434-601X
    Keywords: 25.70.Pq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Comparative analysis of three typical models of nuclear disintegration, the statistical multifragmentation model (SMM), the quantum statistical model (QSM) and a generalized evaporation model (GEM), is carried out. The thermodynamical properties of a decaying system as well as observable characteristics in heavy ion collisions predicted by the different models are discussed. It is shown that these models yield quite similar results for low charge yields at higher excitation energies (E/A〉6 MeV per nucleon) and it is suggested that the coincidence measurements of the intermediate mass fragment multiplicity and the neutron and proton multiplicity (or alternatively, the total bound charge) may be very useful for deducing the decay mechanism. The GEM is shown to differ from the other models in predicting a high Z residue peak.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01280837
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  • 6
    Electronic Resource
    Electronic Resource
    The three-dimensional (2 + 1)-fluid model for relativistic nuclear collisions (1993)
    Springer
    The European physical journal 346 (1993), S. 209-216 
    Details
    ISSN: 1434-601X
    Keywords: 25.70.Np
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new multi-fluid model is constructed for describing high-energy heavy-ion collisions. It is assumed that two baryonic fluids formed by the projectile and target nucleons produce a third hadronic fluid via inelastic nucleon-nucleon collisions. The production and expansion dynamics of the hadronic fluid are investigated in detail. Two equations of state for this fluid are considered: one corresponding to an ideal gas of pions and resonances and another one corresponding to an interacting hadron gas described by the relativistic mean-field model. The effects of freeze-out and non-zero pion chemical potential are investigated. The rapidity and transverse momentum spectra of secondary pions are compared with the experimental data forS + S collisions at 200 GeV/nucleon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01306081
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