Collective flow in ultrarelativistic 3 He–Au collisions

Božek, Piotr; Broniowski, Wojciech

doi:10.1016/j.physletb.2014.11.006

Cited by 52 publications

(32 citation statements)

References 32 publications

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“…This yields a large number of participant nucleons from the other nucleus, and simultaneously a large elliptic deformation [8]. A generalization of this argument holds also for the case of triangular deformation in 3 He [13,14,16]. The experimental analysis carried out by the PHENIX Collaboration confirms this scenario in the found hierarchy of the elliptic and triangular flows measured in p+Au, d+Au, and 3 He+Au collisions [5,6,23], in support of the outlined mechanism of collectivity formation.…”

Section: Introductionsupporting

confidence: 63%

“…Note that this quantity is not altered by the proton electromagnetic size unfolding. Relations (14) and (17) allow us to estimate the ellipticity of the nuclear distribution of Eq. (5) as…”

Section: Estimate Of Ellipticity Of Nuclear Distributions From Thmentioning

confidence: 99%

“…Early studies of collectivity in small systems were carried out in [8][9][10][11][12], followed by investigations of triangularity in 3 He-A collisions [13][14][15], or studies of the α clusterization effects in 12 C-A collisions [16][17][18][19] and other light clustered nuclei [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Elliptic flow in ultrarelativistic collisions with light polarized nuclei

Broniówski

Božek

2020

Phys. Rev. C

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Estimates for elliptic flow in collisions of polarized light nuclei with spin j ≥ 1 with a heavy nucleus are presented. In such collisions the azimuthal symmetry is broken via polarization of the wave function of the light nucleus, resulting in nonzero one-body elliptic flow coefficient evaluated relative to the polarization axis. Our estimates involve experimentally well known features of light nuclei, such as their quadrupole moment and the charge radius, yielding the one-body elliptic flow coefficient in the range from 1% for collisions with the deuteron to 5% for for collisions with 10 B nucleus. Prospects of addressing the issue in the upcoming fixed-target experiment at the Large Hadron Collider are discussed.

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Section: Introductionsupporting

confidence: 63%

“…Note that this quantity is not altered by the proton electromagnetic size unfolding. Relations (14) and (17) allow us to estimate the ellipticity of the nuclear distribution of Eq. (5) as…”

Section: Estimate Of Ellipticity Of Nuclear Distributions From Thmentioning

confidence: 99%

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Elliptic flow in ultrarelativistic collisions with light polarized nuclei

Broniówski

Božek

2020

Phys. Rev. C

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“…Especially in the collision events with sufficiently high multiplicity, it has been noticed that observables related to multi-particle correlations are consistent with a medium collective expansion scenario [6,9,10]. Relativistic hydrodynamics is a natural candidate to simulate and investigate the collective expansion of a QCD medium, even in small colliding systems [11][12][13][14][15][16][17]. However, applying viscous hydrodynamics to small colliding systems is challenged by a couple of factors.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamical noise and Gubser flow

Yan

Grönqvist

2016

J. High Energ. Phys.

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Hydrodynamical noise is introduced on top of Gubser's analytical solution to viscous hydrodynamics. With respect to the ultra-central collision events of Pb-Pb, p-Pb and p-p at the LHC energies, we solve the evolution of noisy fluid systems and calculate the radial flow velocity correlations. We show that the absolute amplitude of the hydrodynamical noise is determined by the multiplicity of the collision event. The evolution of azimuthal anisotropies, which is related to the generation of harmonic flow, receives finite enhancements from hydrodynamical noise. Although it is strongest in the p-p systems, the effect of hydrodynamical noise on flow harmonics is found to be negligible, especially in the ultra-central Pb-Pb collisions. For the short-range correlations, hydrodynamical noise contributes to the formation of a near-side peak on top of the correlation structure originated from initial state fluctuations. The shape of the peak is affected by the strength of hydrodynamical noise, whose height and width grow from the Pb-Pb system to the p-Pb and p-p systems.

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“…Several studies of elliptic flow (v 2 ) and triangular flow (v 3 ) based on such geometry scan have been performed at RHIC with p+Au, d+Au and 3 He+Au [13][14][15][16][17]. In high-multiplicity events, the ε 2 was predicted to be larger than in p+Au while the ε 3 is comparable [12].…”

mentioning

confidence: 99%

Disentangling contributions to small-system collectivity via scans of light nucleus-nucleus collisions

Huang¹,

Chen²,

Li³

et al. 2020

Phys. Rev. C

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The observation of multi-particle azimuthal correlations in high-energy small-system collisions has led to intense debate on its origin and the possible coexistence from two competing theoretical scenarios: one based on initial-state intrinsic momentum anisotropy (ISM), and the other based on final-state collective response to the collision geometry (FSM). To complement the previous scan of asymmetric collision systems (p+Au, d+Au and He+Au), we propose a scan of small symmetric collision systems at RHIC, such as C+C, O+O, Al+Al and Ar+Ar √ s NN = 0.2 TeV, to provide further insights in disentangling contributions from these two scenarios. These symmetric small systems have the advantage of providing a better controlled initial geometry dominated by the average shape of the overlap region, as opposed to fluctuation-driven geometries in asymmetric systems. A transport model is employed to investigate the expected geometry response in the FSM scenario. Different trends of elliptic flow with increasing charge particle multiplicity are observed between symmetric and asymmetric systems, while triangular flow appears to show a similar behavior. Furthermore, a comparison of O+O collisions at √ s NN = 0.2 TeV and at √ s NN = 2.76 − 7 TeV, as proposed at the LHC, provides a unique opportunity to disentangle the collision geometry effects at nucleon level from those arising from subnucleon fluctuations.

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Collective flow in ultrarelativistic 3 He–Au collisions

Cited by 52 publications

References 32 publications

Elliptic flow in ultrarelativistic collisions with light polarized nuclei

Elliptic flow in ultrarelativistic collisions with light polarized nuclei

Hydrodynamical noise and Gubser flow

Disentangling contributions to small-system collectivity via scans of light nucleus-nucleus collisions

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