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We investigate the azimuthal asymmetry v2 of produced pions in pp and pA collisions at both RHIC and SPS energies. In our approach, based on the pQCD parton model and the light-cone QCD-dipole formalism, the azimuthal asymmetry results from…

高能物理 - 唯象学 · 物理学 2008-12-30 B. Z. Kopeliovich , A. H. Rezaeian , Ivan Schmidt

We perform quantum calculations of fluctuations of the electromagnetic fields in $AA$ collisions at RHIC and LHC energies. The analysis is based on the fluctuation-dissipation theorem. We find that in the quantum picture the field…

核理论 · 物理学 2017-06-28 B. G. Zakharov

In the PHOBOS experiment, charged particles are measured in almost the full solid angle. This enables the study of fluctuations and correlations in the particle production over a very wide kinematic range. In this paper, we show results of…

核实验 · 物理学 2008-11-26 Krzysztof Wozniak

It is well understood that subnuclear fluctuations in the initial state of heavy-ion collisions have an important impact on the creation of long-range correlations in the transverse plane. This is also true for the creation of particle…

核理论 · 物理学 2025-10-23 Oscar Garcia-Montero , Sören Schlichting , Jie Zhu

In ultra-central heavy-ion collisions, anisotropic hydrodynamic flow is generated by density fluctuations in the initial state rather than by geometric overlap effects. For a given centrality class, the initial fluctuation spectrum is…

核理论 · 物理学 2015-07-15 Chun Shen , Zhi Qiu , Ulrich Heinz

In this study, the intermittency behavior of emitted particles produced in heavy ion collisions has been studied using both modes (default $\&$ string melting) of A Multi Phase Transport (AMPT) model-generated data. We adopted one of the…

高能物理 - 唯象学 · 物理学 2025-01-10 Somen Gope , Supriya Das , Saikat Biswas

The multiplicity and average transverse momentum of the charged and identified particles produced in different kinds of colliding systems are an example of global observables used to characterize events over a wide range of energy. Studying…

核实验 · 物理学 2022-09-28 Eleazar Cuautle , Edgar Domínguez Rosas , Mario Rodríguez-Cahuantzi

Using the Gribov-Glauber model for photon-nucleus scattering and a generalization of the vector meson dominance model for the hadronic structure of the photon, we make predictions for the cross section of incoherent $\rho$ photoproduction…

高能物理 - 唯象学 · 物理学 2020-08-05 V. Guzey , E. Kryshen , M. Zhalov

In p-p collisions the average transverse momentum is known to be correlated with the multiplicity of produced particles. The correlation is shown to survive in a superposition model of nucleus-nucleus collisions. When properly…

核理论 · 物理学 2009-11-11 Stanislaw Mrowczynski

We study the event-by-event fluctuations of the charged particles and compare the results of different Monte-Carlo Generators (MCG): VNIb, HIJING, HIJING/B${\bar B}$ and RQMD. We find that the $D$-measure can be used to distinguish between…

高能物理 - 唯象学 · 物理学 2016-09-06 Q. H. Zhang , V. Topor Pop , S. Jeon , C. Gale

Anisotropic flow and fluctuations are sensitive observables of the initial state effects in heavy ion collisions and are characterized by the medium properties and final state interactions. Using event-shape observables, one can constrain…

核理论 · 物理学 2025-07-29 Suraj Prasad , Aswathy Menon K R , Raghunath Sahoo , Neelkamal Mallick

Using event-by-event viscous fluid dynamics to evolve fluctuating initial density profiles from the Monte-Carlo Glauber model for U+U collisions, we report a "knee"-like structure in the elliptic flow as a function of collision centrality,…

核理论 · 物理学 2015-10-28 Andy Goldschmidt , Zhi Qiu , Chun Shen , Ulrich Heinz

This paper introduces a versatile approach for computing the risk of collision specifically tailored for scenarios featuring low relative encounter velocities, but with potential applicability across a wide range of situations. The…

We developed a Monte Carlo event generator for production of nucleon configurations in complex nuclei consistently including effects of Nucleon-Nucleon (NN) correlations. Our approach is based on the Metropolis search for configurations…

核理论 · 物理学 2013-05-14 M. Alvioli , H. -J. Drescher , M. Strikman

In this paper we consider the Good - Walker approach for the diffractive excitation and updated the Miettinen -- Pumplin (MP) model for $pp/\bar{p}p$ collisions considering the recent LHC data for the total and elastic $pp$ cross sections.…

高能物理 - 唯象学 · 物理学 2019-07-24 V. P. Goncalves , R. Palota da Silva , P. V. R. G. Silva

The ALICE detector at the LHC is used to study the properties of the Quark-Gluon Plasma produced in heavy-ion collisions. As a reference measurement, also the analysis of proton-proton (pp) collisions is very important. In the study…

核实验 · 物理学 2019-08-13 S. T. Heckel

The nucleon-nucleon collision profile, being the basic entity of the wounded nucleon model, is usually adopted in the form of hard sphere or the Gaussian shape. We suggest that the cross section fluctuations given by the gamma distribution…

核理论 · 物理学 2014-03-03 Maciej Rybczynski , Zbigniew Wlodarczyk

A detailed study of correlated scalars, produced in collisions of nuclei and associated with the $\sigma$-field fluctuations, $(\delta \sigma)^2= < \sigma^2 >$, at the QCD critical point (critical fluctuations), is performed on the basis of…

高能物理 - 唯象学 · 物理学 2009-11-11 N. G. Antoniou , Y. F. Contoyiannis , F. K. Diakonos , G. Mavromanolakis

The IP-Glasma model of CGC combined with the Lund model of PYTHIA provides a very successful description of hadron production from gluon dominated non-equilibrium matter in various small collision systems. This new CGC+PYTHIA framework,…

核理论 · 物理学 2019-02-20 Björn Schenke , Sören Schlichting , Prithwish Tribedy , Raju Venugopalan

The dynamical charge fluctuations have been studied in ultra-relativistic heavy-ion collisions by using hadronic model simulations, such as UrQMD and HIJING. The evolution of fluctuations has been calculated at different time steps during…

核理论 · 物理学 2015-03-03 Bhanu Sharma , Madan M. Aggarwal , Nihar Ranjan Sahoo , Tapan K. Nayak
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