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  • 2000-2004  (3)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Determination of the equation of state of quark matter from $J/\psi$ and $\Upsilon$ suppression at RHIC and LHC (2000)
    Springer
    The European physical journal 17 (2000), S. 179-186 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. The long lifetime of the quark–gluon plasma likely to be created in relativistic heavy ion collisions at RHIC and LHC energies renders it sensitive to the details of the equation of state of the quark matter. We show that the $p_{\mathrm{T}}$ dependence of the survival probability of the directly produced $J/\psi$ at RHIC energies and that of the directly produced $\Upsilon$ at LHC energies is quite sensitive to the speed of sound in the quark matter, which relates the pressure and the energy density of the plasma. The transverse expansion of the plasma is shown to strongly affect the $J/\psi$ suppression at LHC energies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100520000452
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A second look at single-photon production in S + Au collisions at 200 A GeV and implications for quark–hadron phase transition (2000)
    Springer
    The European physical journal 12 (2000), S. 109-112 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We reanalyze the production of single photons in S + Au collisions at CERN SPS to investigate: (i) the consequences of using a much richer equation of state for hadrons than the one used in an earlier study by us, and (ii) to see if the recent estimates of photon production in quark matter (at two-loop level) by Aurenche, et al. are consistent with the upper limit of the photon production measured by the WA80 group. We find that the data are consistent with a quark–hadron phase transition. The data are also consistent with a scenario where no phase transition takes place, but where the hadronic matter reaches a density of several hadrons per unit volume, which is rather unphysical.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100529900231
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Scaling of single photon production in hadronic collisions (2001)
    Springer
    The European physical journal 22 (2001), S. 129-132 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Scaling of single photon production in pp and $p\overline{p}$ collisions is studied. It is empirically observed that the available data scales $\sim s^{1/2}/p_{\mathrm{T}}^5$ for $x_{\mathrm{T}}=2p_{\mathrm{T}}/s^{1/2} \leq 0.1$ and $\sim (s^{1/2})^{3.3}/p_{\mathrm{T}}^9$ for larger $x_{\mathrm{T}}$ . The NLO pQCD predictions for pp collisions at an $s^{1/2}$ of 200 and 5500 GeV, relevant for RHIC and LHC energies are seen to closely follow this scaling behavior. Implications for single photon production in heavy ion collisions are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100520100789
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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