Interplay between hydrodynamics and jets

Zapp, Korinna; Floerchinger, Stefan

doi:10.1016/j.nuclphysa.2014.09.037

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…Such an attempt has been made with the help of the parton energy loss model JEWEL [45][46][47]. It has been combined with a hydrodynamical model, but only the influence on the radial flow has been estimated to be low [48,49], while here we were interested in flow anisotropies. (We have checked that the azimuthal angle-integrated single-particle spectra are hardly changed in our simulations, also.)…”

Section: Discussionmentioning

confidence: 99%

The effect of momentum deposition during fireball evolution on flow anisotropy

Schulc¹,

Tomášik²

2016

J. Phys. G: Nucl. Part. Phys.

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Abstract. The highest LHC energies give rise to production of many pairs of hard partons which deposit four-momentum into the expanding fireball matter. We argue that it is necessary to include momentum deposition during fireball evolution into 3+1 dimensional hydrodynamic simulations of the collision. This influence cannot be accounted for simply by modifying initial conditions of the simulation. The resulting contribution to flow anisotropy is correlated with the fireball geometry and causes an increase of the elliptic flow in non-central collisions. The results are presented for various scenarios with energy and momentum deposition to clearly demonstrate this effect.

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Section: Discussionmentioning

confidence: 99%

The effect of momentum deposition during fireball evolution on flow anisotropy

Schulc¹,

Tomášik²

2016

J. Phys. G: Nucl. Part. Phys.

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“…Finally, in [11,12] the authors only study the influence of hard partons on radial flow and did not touch elliptic flow anisotropies.…”

Section: Discussionmentioning

confidence: 99%

Anisotropic flow generated by hard partons in medium

Tomasik,

Schulc

2015

Preprint

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Hard partons which are produced copiously in nuclear collisions at the LHC, deposit most of their energy and momentum into the surrounding quark-gluon plasma. We show that this generates streams in the plasma and contributes importantly to flow anisotropies. With the help of event-by-event three-dimensional perfect hydrodynamic simulations we calculate the observable azimuthal anisotropies of hadronic distributions and show that the proposed mechanism is capable of generating non-negligible part of the observed signal. Hence, it must be taken into account in quantitative studies in which one tries to extract the values of viscosities from the comparison of simulated results with measured data.

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“…T he introduction o f jets, however, breaks longitudinal boost invariance w hich is im plicitly assum ed in a 2 + ID sim ulation. The influence o f je ts on the evolution in central collisions was investigated in a 1 + 1D approach also in [24,25]. H ere we present results from our three-dim ensional ideal hydrodynam ic sim ulation w ith a realistic m ultiplicity distribution o f hard partons.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic flow of the fireball fed by hard partons

Schulc

Tomášik

2014

Phys. Rev. C

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In nuclear collisions at highest accessible LHC energies, often more than one dijet pairs deposit momentum into the deconfined expanding medium. With the help of 3+1 dimensional relativistic hydrodynamic simulation we show that this leads to measurable contribution to the anisotropy of collective transverse expansion. Hard partons generate streams in plasma which merge if they come close to each other. This mechanism correlates the resulting contribution to flow anisotropy with the fireball geometry and causes an increase of the elliptic flow in non-central collisions.Comment: 5 pages, 4 figures, revised version according to referee's comments - only minor changes and some explanations adde

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Interplay between hydrodynamics and jets

Cited by 3 publications

References 12 publications

The effect of momentum deposition during fireball evolution on flow anisotropy

The effect of momentum deposition during fireball evolution on flow anisotropy

Anisotropic flow generated by hard partons in medium

Anisotropic flow of the fireball fed by hard partons

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