Alternative ansatz to wounded nucleon and binary collision scaling in high-energy nuclear collisions

Moreland, J. Scott; Bernhard, Jonah E.; Bass, Steffen A.

doi:10.1103/physrevc.92.011901

Cited by 420 publications

(408 citation statements)

References 47 publications

Supporting

Mentioning

377

Contrasting

Unclassified

Order By: Relevance

“…At low p T (p T < 2 GeV/c), flow coefficients are expected to be mostly determined by the collective expansion of the system, which is commonly described by hydrodynamic models. The measurements are compared to three calculations, one employing IP-Glasma initial conditions [60] matched to the MUSIC viscous hydrodynamic code [61] and two calculations using iEBE-VISHNU viscous hydrodynamic code [62] with AMPT [63] or TRENTo [64] initial conditions. The parameters of TRENTo were tuned to reproduce previous measurements in Pb-Pb collisions at √ s NN = 2.76 TeV [16]; with such tuning TRENTo has been shown [64] to effectively mimic IP-Glasma initial conditions and therefore the two calculations TRENTo+iEBE-VISHNU and IP-Glasma+MUSIC are expected to be based on similar initial conditions.…”

Section: Jhep07(2018)103mentioning

confidence: 99%

Energy dependence and fluctuations of anisotropic flow in Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ and 2.76 TeV

Acharya

Acosta

Adamová

et al. 2018

J. High Energ. Phys.

View full text Add to dashboard Cite

Measurements of anisotropic flow coefficients with two-and multi-particle cumulants for inclusive charged particles in Pb-Pb collisions at √ s NN = 5.02 and 2.76 TeV are reported in the pseudorapidity range |η| < 0.8 and transverse momentum 0.2 < p T < 50 GeV/c. The full data sample collected by the ALICE detector in 2015 (2010), corresponding to an integrated luminosity of 12.7 (2.0) µb −1 in the centrality range 0-80%, is analysed. Flow coefficients up to the sixth flow harmonic (v 6 ) are reported and a detailed comparison among results at the two energies is carried out. The p T dependence of anisotropic flow coefficients and its evolution with respect to centrality and harmonic number n are investigated. An approximate power-law scaling of the form v n (p T ) ∼ p n/3 T is observed for all flow harmonics at low p T (0.2 < p T < 3 GeV/c). At the same time, the ratios v n /v n/m m are observed to be essentially independent of p T for most centralities up to about p T = 10 GeV/c. Analysing the differences among higher-order cumulants of elliptic flow (v 2 ), which have different sensitivities to flow fluctuations, a measurement of the standardised skewness of the event-by-event v 2 distribution P (v 2 ) is reported and constraints on its higher moments are provided. The Elliptic Power distribution is used to parametrise P (v 2 ), extracting its parameters from fits to cumulants. The measurements are compared to different model predictions in order to discriminate among initial-state models and to constrain the temperature dependence of the shear viscosity to entropy-density ratio.

show abstract

Section: Jhep07(2018)103mentioning

confidence: 99%

Energy dependence and fluctuations of anisotropic flow in Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ and 2.76 TeV

Acharya

Acosta

Adamová

et al. 2018

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…Both models include saturation effects and lead to similar energy deposition in the transverse plane. In [24] it was shown that the relevant feature to describe the experimental data is that the initial entropy density is proportional to the product of thickness functions.…”

Section: B Relevance Of Initial State Fluctuations For Data Interprementioning

confidence: 99%

Initial-State Quantum Fluctuations in the Little Bang

Gelis

Schenke²

2016

Annu. Rev. Nucl. Part. Sci.

View full text Add to dashboard Cite

We review recent developments in the ab-initio theoretical description of the initial state in heavyion collisions. We emphasize the importance of fluctuations, both for the phenomenological description of experimental data from the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC), and the theoretical understanding of the non-equilibrium early time dynamics and thermalization of the medium.

show abstract

“…In conclusion the strangenesss production in AA, pp and pA in high energy collisions suggests a universal behavior which emerges by taking into account the transverse size of the systems and its fluctuactions in high multiplicity events. However, in events with large fluctuactions of the gluon field in the initial configuration the transverse size of small systems is model dependent [16] and therefore a more complete analysis, which takes into account ALICE data at higher energy [17], is in progress. …”

Section: Pos(eps-hep2017)158mentioning

confidence: 99%

Universal strangeness production and size fluctuactions in small and large systems

Castorina¹,

Floris²,

Plumari³

et al. 2017

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017)

View full text Add to dashboard Cite

Strangeness production in high multiplicity events gives indications on the transverse size fluctuactions in nucleus-nucleus (AA), proton-nucleus (pA) and proton-proton (pp) collisions. In particular the behavior of strange particle hadronization in "small" (pp, pA) and "large" (AA) initial configurations of the collision can be tested for the specific particle species, for different centralities and for large fluctuations of the transverse size in pA and pp by using the recent ALICE data. A universality of strange hadron production emerges by introducing a dynamical variable proportional to the initial parton density in the transverse plane.

show abstract

Alternative ansatz to wounded nucleon and binary collision scaling in high-energy nuclear collisions

Cited by 420 publications

References 47 publications

Energy dependence and fluctuations of anisotropic flow in Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ and 2.76 TeV

Energy dependence and fluctuations of anisotropic flow in Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ and 2.76 TeV

Initial-State Quantum Fluctuations in the Little Bang

Universal strangeness production and size fluctuactions in small and large systems

Contact Info

Product

Resources

About