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The multiplicity per rapidity of the well-identified particles $\pi^{-}$, $\pi^{+}$, $k^{-}$, $k^{+}$, $\bar{p}$, $p$, and $p-\bar{p}$ measured in different high-energy experiments, at energies ranging from $6.3$ to $5500~$GeV, are…

高能物理 - 唯象学 · 物理学 2022-03-08 Abdel Nasser Tawfik , Mahmoud Hanafy , Werner Scheinast

In this study, we report the predictions for the flow observables for different centrality classes in $O+O$ collisions. Our predictions utilize two different approaches, hydrodynamic and transport models, to analyze the behavior of the flow…

核理论 · 物理学 2025-07-23 Jagbir Singh , M. U. Ashraf , A. M. Khan , S. Kabana

Multi-parton interactions and color reconnection can produce QGP-like effects in small systems, specifically, radial flow-like patterns. For pp collisions simulated with Pythia 8.212, in this work we investigate their effects on different…

高能物理 - 唯象学 · 物理学 2016-10-14 Eleazar Cuautle , Antonio Ortiz , Guy Paic

We investigate pseudorapidity correlations of the average transverse flow of particles emitted in relativistic heavy-ion collisions. We employ 3+1 dimensional viscous relativistic hydrodynamics with initial conditions from the quark Glauber…

核理论 · 物理学 2017-07-12 Sandeep Chatterjee , Piotr Bozek

The observation of heavy-ion-like behaviour in pp collisions at the LHC suggests that more physics mechanisms are at play than traditionally assumed. The introduction e.g. of quark-gluon plasma or colour rope formation can describe several…

高能物理 - 唯象学 · 物理学 2017-03-08 Nadine Fischer , Torbjörn Sjöstrand

Several puzzles about the data at high $p_T$ in heavy-ion collisions are listed. The resolution of them all is given in the framework of parton recombination. More specifically, it is the recombination of the soft and semi-hard shower…

核理论 · 物理学 2009-09-29 Rudolph C. Hwa

Small collision systems, e.g. $p$-$p$ and $p$-Pb collisions, comprise a potential reference for more-central A-A collisions with regard to production (or not) of a thermalized quark-gluon plasma (QGP). Small systems with low particle…

高能物理 - 唯象学 · 物理学 2024-10-31 Thomas A. Trainor

In a draining rotating fluid flow background, surface perturbations behave as a scalar field on a rotating effective black hole spacetime. We propose a new model for the background flow which takes into account the varying depth of the…

广义相对论与量子宇宙学 · 物理学 2015-06-08 Mauricio Richartz , Angus Prain , Stefano Liberati , Silke Weinfurtner

We calculate flow observables with the NeXSPheRIO ideal hydrodynamic model and make the first comparison to the complete set of mid-rapidity flow measurements made by the PHENIX collaboration in top energy Au+Au collisions. A simultaneous…

The pi+ pi- balance function in rapidity is computed in a thermal model with resonances. It is found that the correlations from the neutral-resonance decays are important, yielding about a half of the total contribution, which in general…

核理论 · 物理学 2007-05-23 P. Bozek , W. Broniowski , W. Florkowski

We investigate the contributions from the so-called elliptic gluon Wigner distributions to the rapidity and azimuthal correlations of particles produced in high energy $pA$ collisions by applying the double parton scattering mechanism. We…

高能物理 - 唯象学 · 物理学 2017-06-14 Yoshikazu Hagiwara , Yoshitaka Hatta , Bo-Wen Xiao , Feng Yuan

The large multiplicities at the LHC may permit flow harmonics to be determined on an event by event basis in Pb-Pb collisions. We extract these harmonics from event by event di-hadron correlations. Within a fine centrality bin, we find the…

核实验 · 物理学 2019-08-21 Anthony R. Timmins

It has been shown that the thermal photon and the lepton pair spectra can be used to estimate the radial velocity of different phases of the matter formed in nuclear collisions at ultra-relativistic energies. We observe a non-monotonic…

核理论 · 物理学 2009-12-30 Jajati K. Nayak , Jan-e Alam

Azimuthally-differential femtoscopic measurements, being sensitive to spatio-temporal characteristics of the source as well as to the collective velocity fields at freeze out, provide very important information on the nature and dynamics of…

核实验 · 物理学 2019-01-18 ALICE Collaboration

Hydrodynamic simulations are used to calculate the identical pion HBT radii, as a function of the pair momentum $k_{\rm T}$. This dependence is sensitive to the magnitude of the collective radial flow in the transverse plane, and thus…

高能物理 - 唯象学 · 物理学 2015-08-28 Yuji Hirono , Edward Shuryak

The parton and hadron cascade model PACIAE based on PYTHIA was used to investigate the charged particle elliptic flow in minimum bias pp collisions at the LHC energies. The strings were distributed randomly in the transverse ellipsoid of…

核理论 · 物理学 2015-05-20 Dai-Mei Zhou , Yu-Liang Yan , Bao-Guo Dong , Xiao-Mei Li , Du-Juan Wang , Xu Cai , Ben-Hao Sa

We analyze the spectrum of harmonic flow, $v_n(p_T)$ for $n=0\text{--}5$, in event-by-event hydrodynamic simulations of Pb+Pb collisions at the CERN Large Hadron Collider ($\sqrt{s_{NN}}=2.76\,{\text{TeV}}$) with principal component…

核理论 · 物理学 2016-02-25 Aleksas Mazeliauskas , Derek Teaney

Forward-backward (FB) correlations are considered to be a powerful tool for the exploration of the early dynamics of hadronic interactions. The FB correlation functions can be constructed from different observables calculated event-by-event…

核实验 · 物理学 2018-04-20 Igor Altsybeev

Recently the PHENIX Collaboration has made available two-particle correlation Fourier coefficients for multiple detector combinations in minimum bias p+p and 0-5% central p+Au, d+Au, 3He+Au collisions at 200 GeV [1]. Using these…

核理论 · 物理学 2022-02-23 J. L. Nagle , R. Belmont , S. H. Lim , B. Seidlitz

At very high energy the same universal relation between the multiparticle or the transverse energy distribution associated to a rare event $C$, $P_C$ and the corresponding minimum bias distribution P, $P_C(\nu)\equiv \nu/<\nu> P(\nu)$,…

高能物理 - 唯象学 · 物理学 2009-10-30 J. Dias de Deus , C. Pajares , C. A. Salgado