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Showing 1 to 20 of 45 for “"Quark Gluon Plasma (QGP)"”.
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Hadronic gas models in particle production and phase transitions
… the phase transition from hadronic matter to the quark-gluon plasma (QGP).
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Maxima in strangeness observed in heavy ion collisions using statistical models
… transition to a state of deconfined fundamental quarks and gluons known as quark gluon plasma (QGP).
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Equilibration of a scalar field theory: a comparison of methods
… ion collisions a new state of matter called the Quark Gluon Plasma (QGP) is formed where, in this state, quarks are no longer confined to hadrons but are free to move about. Studying this state is expected to lead to a far greater understanding of QCD as this is the only known state where one can …
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J / ( ) production in heavy ion collisions at the STAR detector at RHIC
… discovery of the charm, bottom, and top quarks, and the Z, W±, and Higgs bosons. The theory of Quantum Chromodynamics (QCD), which describes the strong interaction between quarks and gluons in the Standard Model, predicts a phase transition from hadronic matter to a deconfined Quark Gluon …
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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]
… sulla Cromodinamica Quantistica (QCD), sul Quark-Gluon Plasma (QGP) e sull’importanza delle collisioni di ioni pesanti, viene fornita una panoramica dei due principali modelli in grado di descrivere il comportamento collettivo della materia prodotte in queste collisioni, ossia la teoria …
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The Time-Of-Flight detector of ALICE at LHC: construction, test and commissioning with cosmic rays
… physics of strongly-interacting matter and the Quark-Gluon Plasma (QGP). The detector is based on the Multigap Resistive Plate Chamber (MRPC) technology which guarantees the excellent performance required for a large time-of-flight array. The construction and installation of the apparatus in the …
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Fluctuating Open Heavy Flavour Energy Loss in a Strongly Coupled Plasma with Observables from RHIC and the LHC
… AdS/CFT techniques assuming a strongly coupled quark-gluon plasma (QGP). These energy loss predictions are presented for collision energies √ sNN = 2.76 TeV for central collisions and √ sNN = 5.5 TeV for various centrality classes. There are some uncertainties in terms of how we …
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Control study of two-particle correlations in heavy ion collisions at RHIC-PHENIX
… a new state of dense nuclear matter called the Quark-Gluon Plasma (QGP) through the observation of jet quenching. However, the two-particle methodology has also shown to be biased towards di-jet production near the surface of the medium being created. Here, a detailed study using the PHENIX …
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Measurement of inclusive muon elliptic flow in pp collision at √s=13 TeV with the ALICE Experiment
… processes in hadron collisions before the Quark–Gluon Plasma (QGP) formation. They successively interact with the QGP via inelastic and elastic processes. The elliptic flow v2 is one of the signatures of QGP formation. The ALICE experiment has measured its value in various heavy flavour …
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Physics performance studies for the ALICE experiment at the CERN LHC
… of the phase state of hadronic matter known as Quark Gluon Plasma (QGP). Results are presented on the prospects for φ (1020) meson production in pp collisions. A careful analysis of background subtraction methods with particular attention of φ meson production during the first physics run is …
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The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons
… LHC and RHIC have supported the existence of a quark-gluon plasma (QGP), which is strongly coupled and behaves as an almost ideal fluid. We shall discuss both bulk thermodynamic and off-equilibrium transport properties of the QGP, within the theory of quantum chromodynamics (QCD). Meaningful …
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Studies of Jet Modification in Heavy Ion Collisions with the CMS Experiment
… 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 formation, and serve as natural probes of its …
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Second Order And Fluctuating Hydrodynamic Theory Of Two-Particle Transverse Momentum Correlations In Nuclear Collisions
… of nuclear matter consisting of color-deconfined quarks and gluons. This matter is known as the quark-gluon plasma (QGP). Fluctuation and correlation measurements of the detected particles have played a very important role in revealing the properties of QGP. In particular, these measurements have …
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Open and Hidden Charm Mesons at Finite Temperature from Anisotropic Lattice QCD
The quark-gluon plasma (QGP) is conjectured to have existed in the early stages of the Big Bang and it has been discovered in heavy ion collisions. The internal properties of the medium are not well understood. Due to its large mass and long thermalisation time, the charm quark is an excellent tool …
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Anisotropic Flow Measurement in Ultra-Central Pb-Pb Collisions For Run 10 and Run 11 by ALICE
… an extremely hot and dense medium where the quarks and gluons become deconfined from their typical hadronic states. This unique state of matter is known as the Quark-Gluon Plasma (QGP). The collective flow of the system plays a critical role in establishing the equation of state of the QGP. …
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Boltzmann equation studies of the off-equilibrium QCD phenomena
Much of the evolution of the quark-gluon plasma (QGP) produced in heavy-ion collisions can be modeled by relativistic (viscous) hydrodynamics, which assumes that the partons are sufficiently close to equilibrium. We would like to explore the dynamics of QGP, even before this (quasi) equilibrium …
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Strange particle and antiparticle production in Proton-Beryllium interactions at 40 GeV/c at the CERN NA57 Experiment
… matter into a new phase of matter known as a Quark-Gluon Plasma (QGP). An overview of QGP physics, its signatures and experimental results together with its importance to the understanding of QCD is given. The NA57 experimental apparatus is described in detail and the analysis procedures and …
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pQCD energy loss and thermal field theory in small systems
… are traditionally ascribed to the presence of a quark-gluon plasma (QGP) in central heavy-ion collisions also manifest in certain classes of peripheral heavy-ion collisions as well as in smaller colliding systems. The glaring exception to this list of observations of QGP signatures in small …
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Study of parton energy loss in heavy ion collisions using charged particle spectra measured with CMS
… because they create a novel form of matter: the quark-gluon plasma (QGP). Using the CMS detector, spectra of charged particles originating from protonproton (pp), proton-lead (pPb), and lead-lead (PbPb) collisions at a center of mass energy per nucleon pair ( [square root of SNN) of 5.02 TeV are …
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Mapping the redistribution of jet energy in PbPb collisions at the LHC with CMS
… produced hot and dense medium, the Quark- Gluon Plasma (QGP). Jets are objects with color charge evolving through many energy scales, so are an excellent tool for scattering experiment in QGP, with potential to resolve quasiparticle structure and induce medium response. …
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