Influence of initial fluctuations on geometry measures in relativistic U+U and Cu+Au collisions

Rybczyński, M.; Broniowski, Wojciech; Stefanek, G.

doi:10.1103/physrevc.87.044908

Cited by 35 publications

(31 citation statements)

References 64 publications

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“…9b is absent. Thus we confirm the conclusion of [70] that in the standard MCG wounded nucleon scheme (without the M B component) the fluctuations erode the knee structure in ǫ 2 . This prediction is in contradiction with the analyses [31,33] where the knee has been found.…”

Section: A Parameters Of the Model For Pp Collisionssupporting

confidence: 78%

“…But in [31,33] the fluctuations of the charged multiplicity in N N collisions have been taken into account. However, later in [70] it was demonstrated that the knee structure vanishes when the fluctuations are taken into account, that is in contradiction with the analyses [31,33]. On the other hand, more recent analysis [71] indicates on appearance of a weak knee-like feature even when the multiplicity fluctuations in N N collisions are taken into account.…”

Section: A Parameters Of the Model For Pp Collisionsmentioning

confidence: 42%

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Monte Carlo Glauber wounded nucleon model with meson cloud

Захаров

2017

J. Exp. Theor. Phys.

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We study the effect of the nucleon meson cloud on predictions of the Monte Carlo Glauber wounded nucleon model for AA, pA, and pp collisions. From the analysis of the data on the charged multiplicity density in AA collisions we find that the meson-baryon Fock component reduces the required fraction of binary collisions by a factor of ∼ 2 for Au+Au collisions at √ s = 0.2 TeV and ∼ 1.5 for Pb+Pb collisions at √ s = 2.76 TeV. For central AA collisions the meson cloud can increase the multiplicity density by ∼ 16 − 18%. We give predictions for the midrapidity charged multiplicity density in Pb+Pb collisions at √ s = 5.02 TeV for the future LHC run 2. We find that the meson cloud has a weak effect on the centrality dependence of the ellipticity ǫ2 in AA collisions. For collisions of the deformed uranium nuclei at √ s = 0.2 TeV we find that the meson cloud may improve somewhat agreement with the data on the dependence of the elliptic flow on the charged multiplicity for very small centralities defined via the ZDCs signals. We find that the meson cloud may lead to a noticeable reduction of ǫ2 and the size of the fireball in pA and pp collisions.

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Section: A Parameters Of the Model For Pp Collisionssupporting

confidence: 78%

Section: A Parameters Of the Model For Pp Collisionsmentioning

confidence: 42%

Monte Carlo Glauber wounded nucleon model with meson cloud

Захаров

2017

J. Exp. Theor. Phys.

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“…Increasing the multiplicity fluctuations as in Ref. [26] will only increase the eccentricity in central collisions suggesting that a different explanation may be required to explain both the turn-over of v 2 /ε 2 and the lack of a knee structure in v 2 vs dN ch /dη. [27][28][29][30].…”

mentioning

confidence: 99%

“…No knee structure is observed suggesting the Glauber-x hard model may not be the correct description. Adding more multiplicity fluctuations causes the knee structure to disappear [26] but this will also significantly increase the average ε 2 in central collisions.…”

mentioning

confidence: 99%

Azimuthal Anisotropy inU+UandAu+AuCollisions at RHIC

Adamczyk¹,

Adkins²,

Agakishiev³

et al. 2015

Phys. Rev. Lett.

137

119

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“…Very recently different methods have been proposed to modify some of the models to incorporate the experimental U + U observations in that particular simulation models [23][24][25]. The constituent quark model is also proposed to describe the experimental observation on v 2 in U + U collisions [26,27].…”

Section: Introductionmentioning

confidence: 99%

Transverse momentum distribution and elliptic flow of charged hadrons in $$U+U$$ U + U collisions at $$\sqrt{s_{NN}}=193$$ s NN = 193 GeV using HYDJET++

et al. 2018

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Recent experimental observations of the charged hadron properties in U + U collisions at 193 GeV contradict many of the theoretical models of particle production including two-component Monte Carlo Glauber model. The experimental results show a small correlation between the charged hadron properties and the initial geometrical configurations (e.g. body-body, tip-tip etc.) of U +U collisions. In this article, we have modified the Monte Carlo HYDJET++ model to study the charged hadron production in U + U collisions at 193 GeV center-of-mass energy in tip-tip and body-body initial configurations. We have modified the hard as well as soft production processes to make this model suitable for U + U collisions. We have calculated the pseudorapidity distribution, transverse momentum distribution and elliptic flow distribution of charged hadrons with different control parameters in various geometrical configurations possible for U + U collision. We find that HYDJET++ model supports a small correlation between the various properties of charged hadrons and the initial geometrical configurations of U + U collision. Further, the results obtained in modified HYDJET++ model regarding dn ch /dη and elliptic flow (v 2 ) suitably matches with the experimental data of U + U collisions in minimum bias configuration.

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Influence of initial fluctuations on geometry measures in relativistic U+U and Cu+Au collisions

Cited by 35 publications

References 64 publications

Monte Carlo Glauber wounded nucleon model with meson cloud

Monte Carlo Glauber wounded nucleon model with meson cloud

Azimuthal Anisotropy inU+UandAu+AuCollisions at RHIC

Transverse momentum distribution and elliptic flow of charged hadrons in $$U+U$$ U + U collisions at $$\sqrt{s_{NN}}=193$$ s NN = 193 GeV using HYDJET++

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