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The EPRparadox in massive systems or about strange particles
, 2001
"... We give an introduction to an entangled massive system, specifically the neutral kaon system, which has similarities to the entangled two photon system, but, however, also challenging differences. 1 ..."
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We give an introduction to an entangled massive system, specifically the neutral kaon system, which has similarities to the entangled two photon system, but, however, also challenging differences. 1
Diffraction in deep inelastic scattering
"... Different theoretical methods used for the description of diffractive processes in smallx deep inelastic scattering are reviewed. The semiclassical approach, where a partonic fluctuation of the incoming virtual photon scatters off a superposition of target colour fields, is used to explain the basi ..."
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Different theoretical methods used for the description of diffractive processes in smallx deep inelastic scattering are reviewed. The semiclassical approach, where a partonic fluctuation of the incoming virtual photon scatters off a superposition of target colour fields, is used to explain the basic physical effects. In this approach, diffraction occurs if the emerging partonic state is in a colour singlet, thus fragmenting independently of the target. Other approaches, such as the idea of the pomeron structure function and two gluon exchange calculations, are also discussed in some detail. Particular attention is paid to the close relation between the semiclassical approach and the method of diffractive parton distributions, which is linked to the relation between the target rest frame and the Breit frame point of view. While the main focus is on diffractive structure functions, basic issues in the diffractive production of mesons and of other less inclusive final states are also discussed. Models of the proton colour field, which can be converted into predictions for diffractive cross sections using the semiclassical approach, are presented. The concluding overview of recent experimental results is very brief and mainly
unknown title
, 2001
"... Bell inequalities for entangled kaons and their unitary time evolution ..."
unknown title
, 2001
"... Bell inequalities for entangled kaons and their unitary time evolution ..."
unknown title
, 2007
"... We present new results on the statistical hadronization of heavy quarks at SPS, RHIC and LHC energies. Several new aspects are considered, among them a separation of the collision geometry into a “core ” and a “corona ” part and an estimate of the annihilation rate of charm quark in a hot plasma, to ..."
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We present new results on the statistical hadronization of heavy quarks at SPS, RHIC and LHC energies. Several new aspects are considered, among them a separation of the collision geometry into a “core ” and a “corona ” part and an estimate of the annihilation rate of charm quark in a hot plasma, together with a critical assessment of its influence on the results. For RHIC energies we investigate the centrality dependence of J/ψ production focusing on the model results for different values of the charm production cross section, including its theoretical and experimental uncertainty. We also study, within this model, the rapidity dependence of the J/ψ yield. Recent RHIC data from the PHENIX experiment are well reproduced. At LHC energy, we update our model predictions for the centrality dependence of the J/ψ yield and investigate as well the rapidity dependence. We also discuss the transverse momentum distributions of J/ψ mesons expected from the model and provide predictions for a range of values of the expansion velocity at chemical freezeout. Finally, we extend the model to predict Υ yields in Pb+Pb collisions at LHC energy. 1
unknown title
, 2006
"... We present new results on the statistical hadronization of heavy quarks at SPS, RHIC and LHC energies. Several new aspects are considered, among them a separation of the collision geometry into a “core ” and a “corona ” part and an estimate of the annihilation rate of charm quark in a hot plasma, to ..."
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We present new results on the statistical hadronization of heavy quarks at SPS, RHIC and LHC energies. Several new aspects are considered, among them a separation of the collision geometry into a “core ” and a “corona ” part and an estimate of the annihilation rate of charm quark in a hot plasma, together with a critical assessment of its influence on the results. For RHIC energies we investigate the centrality dependence of J/ψ production focusing on the model results for different values of the charm production cross section, including its theoretical and experimental uncertainty. We also study, within this model, the rapidity dependence of the J/ψ yield. Recent RHIC data from the PHENIX experiment are well reproduced. At LHC energy, we update our model predictions for the centrality dependence of the J/ψ yield and investigate as well the rapidity dependence. We also discuss the transverse momentum distributions of J/ψ mesons expected from the model and provide predictions for a range of values of the expansion velocity at chemical freezeout. Finally, we extend the model to predict Υ yields in Pb+Pb collisions at LHC energy. 1