Lattice QCD at High Temperature and Density

Karsch, Frithjof

doi:10.1007/3-540-45792-5_6

Cited by 436 publications

(197 citation statements)

References 66 publications

(119 reference statements)

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“…The behaviour of these observables is shown in Figure 1.4 for the case of two-flavour QCD with light quarks [11]. The points of most rapid change in L and ψ ψ , corresponding to the maxima of the susceptibilities, coincide.…”

Section: Deconfinementmentioning

confidence: 97%

“…The density of quarks and gluons in this phase becomes so high that partons are still interacting but not confined within hadrons anymore. The transition to the QGP phase is predicted by recent LQCD calculations to occur at a critical temperature, T c of the order of 170 MeV, corresponding to an energy density ε c 1 GeV/fm 3 [11]. If µ B is very large (µ B 1 GeV), the ground state of QCD matter at low T should form Cooper pairs leading to colour superconductivity [12].…”

Section: The Qcd Phase Diagram and The Quark-gluon Plasmamentioning

confidence: 99%

“…When talking about deconfinement in QCD we have in mind that a large number of new degrees of freedom gets liberated at a (phase) transition temperature; quarks and gluons which at low temperature are confined in colourless hadrons and thus Figure 1.4: Deconfinement and chiral symmetry restoration in 2-flavour QCD: L , the order parameter for deconfinement in the limit of m q → ∞, and its susceptibility (left), andψψ, the order parameter for chiral symmetry breaking in the chiral limit (m q → 0) and its susceptibility (right) as a function of the coupling β = 6/g 2 [11].…”

Section: Deconfinementmentioning

confidence: 99%

“…as argued that in a hot quark-gluon plasma, the J/ψ would melt through colour ening [11], so that QGP formation should lead to a suppression of J/ψ production in lear collisions. Similarly, the QGP was expected to result in a higher energy loss for a passing colour charge than a hadronic medium, so that increased jet quenching [12] uld also signal deconfinement.…”

Section: The Critical Temperature Of the Qcd Transitionmentioning

confidence: 99%

“…Yet, those effects -studied e.g. in [11,12,13,14] for QCD plasmas -are generally less important in terms of the amount of E loss . 5 Note that if the energy of the particle is similar to the plasma temperature, E ∼ O(T ), the particle can also gain energy while traversing it.…”

Section: Heavy Quarks As Qgp Probesmentioning

confidence: 99%

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Measurement of the D0 Meson Production in Pb–Pb and p–Pb Collisions

Festanti

2016

Springer Theses

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This thesis presents the measurement of the charmed D 0 meson production relative to the reaction plane in Pb-Pb collisions at the centre-of-mass energy per nucleon-nucleon collision of √ s NN = 2.76 TeV, and the measurement of the D 0 production in p-Pb collisions at √ s NN = 5.02 TeV with the ALICE detector at the CERN Large Hadron Collider.The D 0 azimuthal anisotropy with respect to the reaction plane is sensitive to the interaction of the charm quarks with the high-density strongly-interacting medium formed in ultra-relativistic heavy-ion collisions and, thus, to the properties of this state of matter. In particular, this observable allows to establish whether low-momentum charm quarks participate in the collective expansion of the system and whether they can reach thermal equilibrium with the medium constituents. The azimuthal anisotropy is quan- −0.036 in the interval 2 < p T < 6 GeV/c, which decreases towards more central collisions. Consequently, the nuclear modification factor shows a stronger suppression in the direction orthogonal to the reaction plane. The v 2 and the R AA measured in two azimuthal regions with respect to the reaction plane are compared to theoretical calculations of charm quark transport and energy loss in high-density strongly-interacting matter. The models that include substantial elastic interactions with an expanding medium provide a good description of the observed anisotropy.The D 0 nuclear modification factor R pPb in p-Pb collisions is compatible with unity within uncertainties. The measured R pPb is compared to theoretical models including initial state effects, as well as to the nuclear modification factor measured in central RiassuntoLa tesi presenta la misura della produzione di mesoni D 0 rispetto al piano di reazione in collisioni Pb-Pb all'energia nel centro di massa di √ s NN = 2.76 TeV per coppia di nucleoni e la misura della produzione di D 0 in collisioni p-Pb all'energia di √ s NN = 5.02 TeV con l'esperimento ALICE situato al Large Hadron Collider del CERN.L'anisotropia azimutale dei mesoni D 0 rispetto al piano di reazioneè sensibile alle interazioni del quark charm con il mezzo ad alta densità e fortemente interagente prodotto in collisioni tra ioni pesanti ad energia ultra-relativistica e, di conseguenza, alle proprietà di questo stato della materia. In particolare, permette di stabilire se i quark charm partecipano all'espansione collettiva del sistema e se raggiungono l'equilibrio termico con i costituenti del mezzo. L'anisotropia azimutaleè quantificata tramite il secondo coefficiente v 2 dello sviluppo in serie di Fourier della distribuzione azimutale dei mesoni D 0 e tramite la misura del fattore di modifica nucleare R AA nel piano di reazione e nella direzione ortogonale ad esso. La misura della produzione di D 0 in collisioni p-Pb permette di studiare gli effetti indotti dalla materia nucleare fredda, in modo da poterli distinguere da quelli indotti dal mezzo denso fortemente interagente prodotto in collisioni Pb-Pb.La produzione di mesoni D 0...

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Section: Deconfinementmentioning

confidence: 97%

Section: The Qcd Phase Diagram and The Quark-gluon Plasmamentioning

confidence: 99%

Section: Deconfinementmentioning

confidence: 99%

Section: The Critical Temperature Of the Qcd Transitionmentioning

confidence: 99%

Section: Heavy Quarks As Qgp Probesmentioning

confidence: 99%

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Measurement of the D0 Meson Production in Pb–Pb and p–Pb Collisions

Festanti

2016

Springer Theses

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States of Strongly Interacting Matter

Satz

2002

Fortschr. Phys.

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Strong Interaction

Karsch

Vogelsang

2009

Digital Encyclopedia of Applied Physics

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We present an introductory overview of the strong force, one of the four known fundamental forces in nature. We review the historical developments of strong interaction physics, which led to the formulation of quantum chromo dynamics (QCD), our accepted theory of strong interaction. We discuss the salient features of QCD, its experimental evidence, as well as some of the techniques used in QCD calculations.

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Lattice QCD at High Temperature and Density

Cited by 436 publications

References 66 publications

Measurement of the D0 Meson Production in Pb–Pb and p–Pb Collisions

Measurement of the D0 Meson Production in Pb–Pb and p–Pb Collisions

States of Strongly Interacting Matter

Strong Interaction

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