Static meson correlators in 2+1 flavor QCD at non-zero temperature

Bazavov, A.; Petreczky, Péter

doi:10.1140/epja/i2013-13085-8

Cited by 8 publications

(9 citation statements)

References 63 publications

(80 reference statements)

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“…• Extrapolate an effective running coupling and an effective scattering potential from lattice QCD qq free energy [93] to replace the corresponding running strong coupling and differential cross section in CUJET2.0 to explore non-perturbative jet medium physics near Tc.…”

Section: Discussionmentioning

confidence: 99%

“…The maximumly 10% α max deviations in R in AA and R out AA , b = 2.4 fm and b = 7.5 fm imply that the anisotropic path averaged effective coupling strengths can be originated from local effects. For instance, lattice QCD simulation [93] shows that the qq potential has both distance r and temperature T dependence. The spacing r Fourier transforms into momentum Q, suggests that a com-plete running coupling should have both Q and T dependence, i.e.…”

Section: Pion Production With Respect To Reaction Planementioning

confidence: 99%

“…a thermal gluon with mass m g = (f E ) gT 1 + n f /6 / √ 2 and f E = 1. However, lattice QCD calculation suggests this approximation breaks down in the non-perturbative region [93]. We therefore vary the HTL deformation parameters (f E , f M ) in CUJET2.0 from HTL (1, 0) to a non-HTL (2, 0) to explore this effect.…”

Section: Non-htl Scenariomentioning

confidence: 99%

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Azimuthal jet flavor tomography with CUJET2.0 of nuclear collisions at RHIC and LHC

Buzzatti

Gyulassy

2014

J. High Energ. Phys.

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A perturbative QCD based jet tomographic Monte Carlo model, CUJET2.0, is presented to predict jet quenching observables in relativistic heavy ion collisions at RHIC/BNL and LHC/CERN energies. This model generalizes the DGLV theory of flavor dependent radiative energy loss by including multi-scale running strong coupling effects. It generalizes CUJET1.0 by computing jet path integrations though more realistic 2+1D transverse and longitudinally expanding viscous hydrodynamical fields contrained by fits to low p T flow data. The CUJET2.0 output depends on three control parameters, (α max , f E , f M ), corresponding to an assumed upper bound on the vacuum running coupling in the infrared and two chromo-electric and magnetic QGP screening mass scales (f E µ(T ), f M µ(T )) where µ(T ) is the 1-loop Debye mass. We compare numerical results as a function of α max for pure and deformed HTL dynamically enhanced scattering cases corresponding to (f E = 1, 2, f M = 0) to data of the nuclear modification factor, R f AA (p T , φ; √ s, b) for jet fragment flavors f = π, D, B, e at √ s = 0.2 − 2.76 ATeV c.m. energies per nucleon pair and with impact parameter b = 2.4, 7.5 fm. A χ 2 analysis is presented and shows that R π AA data from RHIC and LHC are consistent with CUJET2.0 at the χ 2 /d.o.f < 2 level for α max = 0.23 − 0.30. The correspondingq(E jet , T )/T 3 effective jet transport coefficient field of this model is computed to facilitate comparison to other jet tomographic models in the literature. The predicted elliptic asymmetry, v 2 (p T ; √ s, b) is, however, found to significantly underestimated relative to RHIC and LHC data. We find the χ 2 v 2 analysis shows that v 2 is very sensitive to allowing even as little as 10% variations of the path averaged α max along in and out of reaction plane paths.

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Section: Discussionmentioning

confidence: 99%

Section: Pion Production With Respect To Reaction Planementioning

confidence: 99%

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Azimuthal jet flavor tomography with CUJET2.0 of nuclear collisions at RHIC and LHC

Buzzatti

Gyulassy

2014

J. High Energ. Phys.

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“…The subscript bare refers again to the fact that these are unrenormalized quantities. At very large distances C bare P (β, N τ , r), C bare S (β, N τ , r) and W bare S (β, N τ , r) approach [L bare (β, N τ )] 2 in the infinite volume limit [8,15,65]. 1 These bare quantities contain ultraviolet (UV) divergences that are regularized on the lattice.…”

Section: Lattice Qcd Setup and Renormalizationmentioning

confidence: 99%

Color screening in ( 2+1 )-flavor QCD

et al. 2018

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We study correlation functions of spatially separated static quark-antiquark pairs in (2+1)-flavor QCD in order to investigate onset and nature of color screening at high temperatures. We perform lattice calculations in a wide temperature range, 140 ≤ T ≤ 5814 MeV, using the highly improved staggered quark action and several lattice spacings to control discretization effects. By comparing at high temperatures our lattice results to weak-coupling calculations as well as to the zero temperature result for the energy of a static quark-antiquark pair, we observe that color screening sets in at rT ≈ 0.3. Furthermore, we also observe that in the range 0.3 rT 0.6 weak-coupling calculations in the framework of suitable effective field theories provide an adequate picture of color screening.

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“…These quantities have already been studied in Ref. [3], though the discussion was restricted to N τ = 6 lattices. Here, we include finer lattices and extrapolate to the continuum limit.…”

Section: Introductionmentioning

confidence: 99%

Polyakov loop correlators and cyclic Wilson loop from lattice QCD

Weber¹,

Petreczky²,

Bazavov³

2016

Proceedings of the 33rd International Symposium on Lattice Field Theory — PoS(LATTICE 2015)

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We discuss color screening in 2+1 flavor QCD in terms of free energies of a static quark-antiquark pair. Thermal modifications of long distance correlations in quark-antiquark systems are studied in terms of static meson correlators. We calculate the Polyakov loop correlator, the colorsinglet Wilson line correlator in Coulomb gauge and the cyclic Wilson loop on lattices using the HISQ/Tree action and almost physical quark mases with N τ = 4, 6, 8, 10, 12. We present results in the continuum limit for temperatures up to T 650 MeV and discuss the linear divergence of the cyclic Wilson loop.

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Static meson correlators in 2+1 flavor QCD at non-zero temperature

Cited by 8 publications

References 63 publications

Azimuthal jet flavor tomography with CUJET2.0 of nuclear collisions at RHIC and LHC

Azimuthal jet flavor tomography with CUJET2.0 of nuclear collisions at RHIC and LHC

Color screening in ( 2+1 )-flavor QCD

Polyakov loop correlators and cyclic Wilson loop from lattice QCD

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