A description of pseudorapidity distributions in p-p collisions at center-of-mass energy from 23.6 to 900 GeV

Jiang, Zhi-Jin; Wang, Jie; Zhang, Haili; Ma, Ke

doi:10.1088/1674-1137/39/4/044102

Cited by 8 publications

(14 citation statements)

References 52 publications

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“…If such matter expands in the same way as that generated in nucleus-nucleus collisions has been experiencing endless disputations. Such situation has changed since a series of findings in recent years [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]. Refs.…”

Section: ⅳ Comparison With Experimental Measurements In P-p Collisionsmentioning

confidence: 99%

A Universal Description of Pseudorapidity Distributions in Both Nucleus-Nucleus and p-p Collisions at Currently Available Energies

Jiang

Deng

Huang

2016

Advances in High Energy Physics

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Investigations have shown that the collective motion not only appears in nucleus-nucleus but also in p-p collisions. The best tool for depicting such collective motion is relativistic hydrodynamics. In this paper, the collective motion is assumed obeying the hydro model which integrates the features of Landau and Hwa-Bjorken theory and is one of a very few analytically solvable models. The fluid is then supposed freezing out into charged particles from a time-like hypersurface with a fixed time of FO t . The researches of present paper show that this part of charged particles together with leading particles, which, by conventional definition, carry on the quantum numbers of colliding nucleons and take away the most part of incident energy, can give a proper universal description to the pseudorapidity distributions of charged particles measured in both nucleus-nucleus and p-p collisions at now available energy regions. PACS number(s): 25.75.Ag, 25.75.Ld, 24.10.Nz Ⅰ. IntroductionIn recent years, especially with the operations of BNL-RHIC and after CERN-LHC, the natures of matter created in nucleus or particle collisions have been undergoing a wide experimental and theoretical research. One of the most important achievements arrived at from this research is that the quark-gluon plasma formed in collisions is in a strongly coupled state as fluid, instead of being in a conventionally believed state as weakly interacting partonic gas [1][2][3][4][5]. The investigations also have shown that this kind of strongly coupled quark-gluon plasma has not only been created in nucleus but also in particle, such as p-p collisions, and the motion of this partonic fluid is nearly as an ideal one with a very little viscosity .The best approach for describing the spatiotemporal evolution of fluid-like partonic matter is the relativistic hydrodynamics, which was first put forward by L. D. Landau in his pioneering work in 1953 [35]. Owing to the high degree of nonlinearity and interconnection of hydro equations, Monte Carlo simulations is, as usual, widely employed to deal with them especially for 2 or 3-dimensional expansions or situations including viscosity. In

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Section: ⅳ Comparison With Experimental Measurements In P-p Collisionsmentioning

confidence: 99%

A Universal Description of Pseudorapidity Distributions in Both Nucleus-Nucleus and p-p Collisions at Currently Available Energies

Jiang

Deng

Huang

2016

Advances in High Energy Physics

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“…In this paper, we argue that the energy dependence of the shape of inclusive rapidity distribution [48][49][50][51][52][53][54] may be considered as an interference effect. The experimental data for the inclusive rapidity distribution are described by the different models [55][56][57][58][59][60][61][62][63][64], which, however, do not take into account the interference effects. The manifestation of the interference effects in the inclusive pseudorapidity distribution is considered in Refs.…”

Section: Introductionmentioning

confidence: 99%

New method of accounting for interference contributions within a multiperipheral model

et al. 2020

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We consider an inelastic scattering of protons within the simplest real scalar model ϕ 3 (phi-cubed). Although this model has been studied for a very long time, the problem of accounting for the interference contributions for all the possible particle multiplicities observed in experiments is not solved yet. We propose a method which is based on grouping of the interference contributions into sets in such a way that the sum of all interference contributions of each particular set can be calculated with Laplace's method. This approach allowed us to calculate all the interference contributions to the cross sections for multiplicities up to n ∼ 50 at the energy ffiffi ffi s p ∼ 50 GeV. The obtained models of the energy dependence of the total pp scattering cross section and the inclusive rapidity distribution are in qualitative agreement with the experiment. We also consider the well-known effect of the energy dependence of the shape of inclusive rapidity distribution and propose an explanation for this dependence and consider it exactly as the interference effect.

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“…Generally, common phenomenological models are useful to answer these questions. We focus on a few phenomenological models such as the three-fireball model [2][3][4][5][6][7], the three-source relativistic diffusion model [8][9][10][11], the multisource thermal model [12][13][14], the model with two Tsallis (or Boltzmann-Gibbs) clusters of fireballs [15][16][17], and the Landau hydrodynamic model [18][19][20][21] which results in a Gaussian shape for the rapidity distribution [21,22] and a few revised versions such as works of Gao et al [23], Wong [24], Jiang et al [25][26][27][28][29][30], Beuf et al [31], and Bialas et al [32].…”

Section: Introductionmentioning

confidence: 99%

“…The rapidity distribution obtained in the model is simply a Gaussian function [21,22] in which the width is related to the speed of sound. A few revised versions were proposed in literature [22][23][24][25][26][27][28][29][30][31][32] to give better descriptions for experimental data, some of which include the contributions of leading and non-leading nucleons. We focus on a simple revised version [23] in which a central source at midrapidity, a target source in the backward rapidity region and a projectile source in the forward rapidity region are used.…”

Section: Introductionmentioning

confidence: 99%

“…In view of the wider application of the Landau hydrodynamic model [18][19][20][21][22] and its various revisions [22,[24][25][26][27][28][29][30][31][32], we have used the simple revised (three-source) Landau hydrodynamic model to study the pseudorapidity and rapidity distributions of charged particles produced in symmetric and asymmetric nuclear collisions at high energies in our recent work [23]. As a follow-up article of ref.…”

Section: Introductionmentioning

confidence: 99%

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On Distributions of Emission Sources and Speed-of-Sound in Proton-Proton (Proton-Antiproton) Collisions

Gao

Liu

2015

Advances in High Energy Physics

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The revised (three-source) Landau hydrodynamic model is used in this paper to study the (pseudo)rapidity distributions of charged particles produced in proton-proton and proton-antiproton collisions at high energies. The central source is assumed to contribute with a Gaussian function which covers the rapidity distribution region as wide as possible. The target and projectile sources are assumed to emit isotropically particles in their respective rest frames. The model calculations obtained with a Monte Carlo method are fitted to the experimental data over an energy range from 0.2 to 13 TeV. The values of the squared speed-of-sound parameter in different collisions are then extracted from the width of the rapidity distributions.

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A description of pseudorapidity distributions in p-p collisions at center-of-mass energy from 23.6 to 900 GeV

Cited by 8 publications

References 52 publications

A Universal Description of Pseudorapidity Distributions in Both Nucleus-Nucleus and p-p Collisions at Currently Available Energies

A Universal Description of Pseudorapidity Distributions in Both Nucleus-Nucleus and p-p Collisions at Currently Available Energies

New method of accounting for interference contributions within a multiperipheral model

On Distributions of Emission Sources and Speed-of-Sound in Proton-Proton (Proton-Antiproton) Collisions

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