Strangeness production in ultrarelativistic heavy-ion collisions. I. Chemical kinetics in the quark-gluon plasma

Matsui, Tetsuo; Svetitsky, Benjamin; McLerran, L.

doi:10.1103/physrevd.34.783

Cited by 100 publications

(76 citation statements)

References 29 publications

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“…In the standard formulation [16,[18][19][20], the rate equation for a binary process a 1 a 2 → b 1 b 2 with a = b is described by the following population equation:…”

Section: Rate Equationmentioning

confidence: 99%

Kinetic Equation with Exact Charge Conservation

Koch

Lin

et al. 2001

Phys. Rev. Lett.

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We formulate the kinetic master equation describing the production of charged particles which are created or destroyed only in pairs due to the conservation of their Abelian charge. Our equation applies to arbitrary particle multiplicities and reproduces the equilibrium results for both canonical (rare particles) and grand canonical (abundant particles) systems. For canonical systems, the equilibrium multiplicity is much lower and the relaxation time is much shorter than the naive extrapolation from the grand canonical ensemble results. Implications for particle chemical equilibration in heavy-ion collisions are discussed.

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“…In the standard formulation [16,[18][19][20], the rate equation for a binary process a 1 a 2 → b 1 b 2 with a = b is described by the following population equation:…”

Section: Rate Equationmentioning

confidence: 99%

Kinetic Equation with Exact Charge Conservation

Koch

Lin

et al. 2001

Phys. Rev. Lett.

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“…The chemical relaxation times for the strangeness approach to chemical equilibrium, in an expanding QGP, has been considered several times before [3,21,22,23,24,25,26]. The study of QGP strangeness chemical equilibration must not be confused with the phenomenological investigation of chemical equilibrium in the final state hadron abundance.…”

Section: Introductionmentioning

confidence: 99%

Strangeness chemical equilibration in a quark-gluon plasma

Letessier

Rafelski

2007

Phys. Rev. C

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We study, in the dynamically evolving QGP fireball formed in relativistic heavy ion collisions at RHIC and LHC, the growth of strangeness yield toward and beyond the chemical equilibrium. We account for the contribution of the direct strangeness production and evaluate the thermal-QCD strangeness production mechanisms. The specific yield of strangeness per entropy,s/S, is the primary target variable. We explore the effect of collision impact parameter, i.e., fireball size, on kinetic strangeness chemical equilibration in QGP. Insights gained in study the RHIC data with regard to the dynamics of the fireball are applied to the study strangeness production at the LHC. We use these results and consider the strange hadron relative particle yields at RHIC and LHC in a systematic fashion. We consider both the dependence on s/S and directly participant number dependence.

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“…For thermal production of charm quark pairs from the quark-gluon plasma, studies so far have been based on the lowest-order QCD process of gluon-gluon fusion. The results show that its contribution depends sensitively on the initial temperature of produced quark-gluon plasma [19][20][21][22][23] and could be important if the initial temperature is high. In hadronic matter, charmed hadron can be produced from reactions such as πN → D c [24], ρN → D c [25], and NN → N c D [26].…”

Section: Introductionmentioning

confidence: 98%

“…Charm production in a quark-gluon plasma has been previously studied in the lowest-order QCD [19][20][21][22]28,29]. In our study, we consider thermal charm production in the next-to-leading order and investigate its sensitivity to the initial conditions of the produced quark-gluon plasma at LHC.…”

Section: Introductionmentioning

confidence: 99%

Thermal charm production in a quark-gluon plasma in Pb-Pb collisions atsNN=5.5TeV

Zhang

Liu

2008

Phys. Rev. C

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Charm production from the quark-gluon plasma created in the midrapidity of central heavy ion collisions at the Large Hadron Collider (LHC) is studied in the next-to-leading order in QCD. Using a schematic longitudinally boost-invariant and transversally expanding fire-cylinder model, we find that charm production could be appreciably enhanced at LHC as a result of the high temperature that is expected to be reached in the produced quark-gluon plasma. Sensitivities of our results to the number of charm quark pairs produced from initial hard scattering, the initial thermalization time and temperature of the quark-gluon plasma, and the charm quark mass are also studied.

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Strangeness production in ultrarelativistic heavy-ion collisions. I. Chemical kinetics in the quark-gluon plasma

Cited by 100 publications

References 29 publications

Kinetic Equation with Exact Charge Conservation

Kinetic Equation with Exact Charge Conservation

Strangeness chemical equilibration in a quark-gluon plasma

Thermal charm production in a quark-gluon plasma in Pb-Pb collisions atsNN=5.5TeV

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