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Showing 1 to 20 of 29 for “"ultra-relativistic"”.
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Hadronization in Ultra-Relativistic Heavy Ion Collisions
… the dynamical hadronization transition in both ultra-relativistic heavy-ion collisions and the very early universe. We develop very general criteria for hydrodynamical stability and apply them to a number of proposed solutions. We find that the hadronization is accomplished by deflagration …
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Hadronization in ultra-relativistic heavy-ion collisions
Submitted by Carolyn Rauber (crauber2@illinois.edu) on 2012-01-20T21:45:02Z No. of bitstreams: 1 1988_seibert.pdf: 2269509 bytes, checksum: 4e635a3483bb6a4b730d04dbba8a345a (MD5)
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Jet study in ultra-relativistic heavy-ion collisions with the ALICE detectors at the LHC
This thesis presents first results on jet reconstruction in simulated Pb+Pb collisions using the ALICE detectors and a UAl-based cone jet finding algorithm which has been modified and optimised to reconstruct high-PT jets on an event-by-event basis. Optimisation of the algorithm parameters and …
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Hadron production within a full transport approach with Statistical Hadronization Mechanism in Ultra-Relativistic Heavy Ion Collisions
… proprietà principali: la libertà asintotica ultravioletta e il confinamento del colore. La combinazione di queste due caratteristiche suggerisce che una materia di quark e gluoni debolmente interagenti, chiamata plasma di quark e gluoni (QGP), dovrebbe esistere solo a temperature e/o densità …
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IMPACT OF THE PRE-EQUILIBRIUM STAGE OF ULTRA-RELATIVISTIC HEAVY ION COLLISIONS: ISOTROPIZATION, PHOTON PRODUCTION AND ELLIPTIC FLOWS
… QCD implies the existence of a super-dense and ultra-hot form of matter in which the color charged particles are deconfined, the quark-gluon plasma (QGP). Many phenomenological approaches and numerical simulations of the QCD clearly indicate the existence of a transition from the hadronic matter …
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Aspects of dynamically enhanced electromagnetic fields from charged relativistic sources in a beam pipe
… to understand dynamic …field effects. In the ultra-relativistic limit analytic field solutions to Maxwell’s equations are determined in both the time and frequency domains, where the fields are explored for various non-stochastic and stochastic multiple pulse source configurations. Their …
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Far-from-equilibrium attractors and universality in ultra-relativistic heavy-ion collisions within relativistic kinetic theory [Attrattori e universalità in collisioni ultrarelativistiche tra ioni pesanti nel contesto della teoria cinetica del trasporto]
… universalità e moti collettivi nelle collisioni ultra-relativistiche mediante la teoria cinetica relativistica. Dopo un’introduzione sulla Cromodinamica Quantistica (QCD), sul Quark-Gluon Plasma (QGP) e sull’importanza delle collisioni di ioni pesanti, viene fornita una panoramica dei due …
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Carroll physics in general relativity: understanding the Carroll limit of the singularity theorem
The Carroll limit of general relativity is an ultra-relativistic limit that is obtained by taking the speed of light (c) to zero. This is in contrast to the Galilean limit, where you can resolve it by taking the c → ∞ limit. This limit was formulated in the study of the Carroll group as an …
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Rescattering and fluctuations in ultrarelativistic heavy-ion collisions
We study ultra-relativistic heavy-ion collisions using, as far as possible, known physics and simple assumptions. One focus is on the measurable effects of rescattering of produced particles in the colliding nuclei. Two models for proton-nucleus collisions are presented, one built from independent …
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Studies of Jet Modification in Heavy Ion Collisions with the CMS Experiment
… Hadron Collider (LHC), lead ions are collided at ultra-relativistic velocities to produce Quark-Gluon Plasma (QGP), a state of matter where quarks and gluons are deconfined and move collectively. Jets are produced in high-momentum transfer parton scatterings prior to and independently of QGP …
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Heavy-flavour production at forward rapidity as a function of charged-particle multiplicity with ALICE at the LHC
… quark. They are produced in the early stages of ultra-relativistic collisions via hard scatterings and are important tools for studying different aspects of Quantum Chromodynamics (QCD) in hadronic collisions. Charged-particle multiplicity gives information on the global characteristics of the …
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The study of the production of heavy flavour muons as a function of charged-particle multiplicity in proton-proton collisions at 8TeV with ALICE at the LHC
… is a detector designed and optimized to study ultra relativistic heavy-ion collisions in which a hot, dense and strongly interacting Quantum Chromodynamics (QCD) medium called the Quark Gluon Plasma (QGP) is created. ALICE also studies proton-proton collisions both to test for pertubative QCD …
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Development of a high-level trigger for the dimuon spectrometer of the ALICE experiment at the large hadron collider
… the beginning of a new phase in the study of ultra-relativistic heavy ion-collisions. It will be possible to explore in great detail phenomena discovered or hinted at in the course of experiments at the Relativistic Heavy Ion Collider, in particular the signals of the quark-gluon plasma. One …
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DIRECTED AND ELLIPTIC FLOW MEASUREMENTS: A COMPARISON BETWEEN THE PARTICIPANT AND SPECTATOR PLANES IN Pb+Pb COLLISIONS AT √sNN = 5.02 TeV WITH CMS AT THE LHC
… momentum (pT) and pseudorapidity (η) in ultra-relativistic PbPb collisions at √sNN = 5.02 TeV with the Large Hadron Collider (LHC) at CERN. The reaction plane (RP) angle is approximated using participants and spectator neutrons measured with the Compact Muon Solenoid (CMS) detector and …
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Measurement of charged particle multiplicity distribution in Au + Au collisions up to 200 GeV
Au+Au collisions in the Relativistic Heavy Ion Collider (RHIC) herald a new era of opportunities for studying hadronic matter under conditions of high energy density and nucleon density. The theory of strong interactions, Quantum Chromodynamics (QCD), tells us very little about the dynamics of a …
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Neutron Star Electromagnetic Field Structure
… process. This process was studied in the non-relativistic, ultra-relativistic, and rigorous relativistic dispersion regimes for the neutrons. Both analytical and numerical approaches show that a phase transition is present for a density near 10<sup>38</sup><em>cm</em><sup>−3</sup> and a …
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Dark Matter Production after Inflation and Constraints
… radiation constraint on the effective number of relativistic species, an interesting constraint can be placed. This bound arises from the fact that the field whose angular excitations are the axions can be displaced from its minimum during inflation and later decays dominantly into …
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Signals of Collectivity in Heavy-Ion Collisions in the Far From Equilibrium Regime
… one of the main observables in the field of ultra-relativistic heavy-ion collisions (HIC), which can be reproduced by theoretical descriptions from a realistically modelled initial stage.<br /><br /> In this thesis we see that it is possible - already by considering a few collisions - to …
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