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The mean transverse momentum in high energy nuclear collisions is studied. The formation of a Color Glass Condensate results in an increase of the square of the mean transverse momentum with the charged multiplicity per unit rapidity and…

High Energy Physics - Phenomenology · Physics 2010-11-30 Larry McLerran , Jurgen Schaffner-Bielich

Substantial collective flow is observed in collisions between large nuclei at RHIC (Relativistic Heavy Ion Collider) as evidenced by single-particle transverse momentum distributions and by azimuthal correlations among the produced…

Nuclear Theory · Physics 2008-11-26 Laszlo P. Csernai , Joseph. I. Kapusta , Larry D. McLerran

The vorticity development is studied in the reaction plane of peripheral relativistic heavy ion reactions where the initial state has substantial angular momentum. The earlier predicted rotation effect and Kelvin Helmholtz Instability, lead…

Nuclear Theory · Physics 2013-03-25 L. P. Csernai , V. K. Magas , D. J. Wang

In 2017, the STAR collaboration at the Relativistic Heavy Ion Collider (RHIC) has measured finite global angular momentum in heavy-ion collisions through a spin polarization measurement of $\Lambda$ hyperons. This measurement revealed a…

Nuclear Theory · Physics 2024-01-15 Nils Sass , Marco Müller , Oscar Garcia-Montero , Hannah Elfner

The evolution of a relativistic heavy-ion collision is typically understood as a process that transmutes the initial geometry of the system into the final momentum distribution of observed hadrons, which can be described via a cumulant…

Nuclear Theory · Physics 2024-05-24 Jefferson Sousa , Jorge Noronha , Matthew Luzum

Using a relativistic transport (ART) model, we study the stopping power, the formation of superdense hadronic matter as well as the strength of transverse and radial flow in central Au+Au collisions at beam momentum from 2 to 12 GeV/c per…

Nuclear Theory · Physics 2009-10-30 Bao-An Li , C. M. Ko

Results are presented on event-by-event fluctuations in transverse momentum of charged particles, produced at forward rapidities in p+p, C+C, Si+Si and Pb+Pb collisions at 158 AGeV. Three different characteristics are discussed: the average…

High Energy Physics - Experiment · Physics 2013-05-29 The NA49 Collaboration

Momentum distribution of fragments produced in 12C+12C reaction at 28.7 MeV/nucleon is analyzed with antisymmetrized version of molecular dynamics (AMD). Calculations are made for several cases of stochastic collisions and the projectile…

Nuclear Theory · Physics 2008-11-26 A. Ono , H. Horiuchi , T. Maruyama , A. Ohnishi

We analyze the proton-lead collisions at the LHC energy of 5.02TeV in the three-stage approach, previously used to successfully describe the relativistic A-A collisions. The approach consists of the early phase, modeled with the Glauber…

Nuclear Theory · Physics 2013-07-15 Piotr Bozek , Wojciech Broniowski

We investigate flow in semi-peripheral nuclear collisions at AGS and SPS energies within macroscopic as well as microscopic transport models. The hot and dense zone assumes the shape of an ellipsoid which is tilted by an angle Theta with…

Nuclear Theory · Physics 2009-10-31 J. Brachmann , S. Soff , A. Dumitru , H. Stöcker , J. A. Maruhn , W. Greiner , D. H. Rischke

Anisotropies in the initial energy density distribution of the quark-gluon plasma created in high energy heavy ion collisions lead to anisotropies in the azimuthal distributions of the final-state particles known as collective flow. Fourier…

High Energy Physics - Experiment · Physics 2020-07-03 CMS Collaboration

The early stage of a heavy ion collision is governed by local non-equilibrium momentum distributions which have been approximated by colliding nuclear matter configurations, i.e. by two Lorentz elongated Fermi ellipsoids. This approach has…

Nuclear Theory · Physics 2009-11-10 T. Gaitanos , C. Fuchs , H. H. Wolter

In this work, we perform a model-to-data comparison for U+U and Au+Au collisions performed at RHIC at $\sqrt{s_{\rm NN}}$ = $193$ GeV and $200$ GeV, using a multistage framework. Model calculations for various configurations of $^{238}$U…

Nuclear Theory · Physics 2024-06-17 Nicolas Fortier , Sangyong Jeon , Charles Gale

The centrality dependence of directed and elliptic flow in light and heavy systems of colliding nuclei is studied within two microscopic transport models at energies from 1 AGeV to 160 A GeV. The pion directed flow has negative slope in the…

Nuclear Theory · Physics 2009-11-06 L. V. Bravina , Amand Faessler , C. Fuchs , E. E. Zabrodin

We study the transverse momentum, $p_T$, broadening of charm and beauty quarks in the early stage of high energy nuclear collisions. We aim to compare the diffusion in the evolving Glasma fields with that of a standard, Markovian-Brownian…

High Energy Physics - Phenomenology · Physics 2021-10-28 Pooja , Santosh K. Das , Lucia Oliva , Marco Ruggieri

Substantial collective flow is observed in collisions between large nuclei at high energy, as evidenced by single-particle transverse momentum distributions and by azimuthal correlations among the produced particles. The data are…

Nuclear Theory · Physics 2008-11-26 Joseph I. Kapusta

Directed flow of deuterons, tritons, $^3$He, and $^4$He is studied in Au+Au collisions at a beam momentum of about 10.8 $A$ GeV/c. Flow of all particles is analyzed as a function of transverse momentum for different centralities of the…

Exchange of orbital angular momentum between Laguerre-Gaussian beam of light and center-of-mass motion of an atom or molecule is well known. We show that orbital angular momentum of light can also be transferred to the internal electronic…

Atomic Physics · Physics 2015-06-19 Pradip Kumar Mondal , Bimalendu Deb , Sonjoy Majumder

We analyze the time evolution of the kinetic properties of nuclear matter produced in heavy-ion collisions at Fermi energies. The collision system is simulated using Constrained Molecular Dynamics (CoMD) transport calculations whose output…

Nuclear Theory · Physics 2023-11-01 Thomas Onyango , Aldo Bonasera , Ralf Rapp

The strong variability of magnetic central engines of AGN and GRBs may result in highly intermittent strongly magnetized relativistic outflows. We find a new magnetic acceleration mechanism for such impulsive flows that can be much more…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Jonathan Granot , Serguei Komissarov , Anatoly Spitkovsky
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