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Showing 1 to 20 of 58 for “"Qgp"”.
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Second Order And Fluctuating Hydrodynamic Theory Of Two-Particle Transverse Momentum Correlations In Nuclear Collisions
… 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 shown that the QGP behaves like a nearly perfect liquid. …
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The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons
… 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 approximations of most …
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Studies of Jet Modification in Heavy Ion Collisions with the CMS Experiment
… 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 properties. As the …
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Pre-equilibrium photon and dilepton production from the early stages of high-energy heavy-ion collisions
… is known under the name quark-gluon plasma (QGP) and is one of the most unique states we are able to access. Initially far from equilibrium, it will eventually thermalize and transition to confined matter. Until today we have learned many things regarding the QGP but understanding it in its …
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Measurement of inclusive muon elliptic flow in pp collision at √s=13 TeV with the ALICE Experiment
… 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 decay channels in Pb–Pb …
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Baryon-to-Meson Ratios in Jets from Au+Au and p+p Collisions at 200 GeV
… expansion and parton recombination within the QGP are believed to be responsible for this enhancement. Jets have served as powerful probes of QGP properties, with numerous measurements revealing significant modifications to jet yields and internal structure. LHC measurements reveal that, …
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Strange particle and antiparticle production in Proton-Beryllium interactions at 40 GeV/c at the CERN NA57 Experiment
… 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 techniques along with …
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pQCD energy loss and thermal field theory in small systems
… 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 systems is the partonic …
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Equilibration of a scalar field theory: a comparison of methods
… 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 find free quarks …
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Charged hadron transverse momentum spectra in Au+Au and d+Au collisions at 200 GeV per nucleon pair
… become deconfined and form a Quark-Gluon Plasma (QGP). These densities are thought to be achievable with Au+Au collisions at RHIC energies. Another prediction theorizes that before the collision, the very high energies of the nuclei will create a condensate of the low momentum gluons within the …
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Search for and studies of Quark-Gluon Plasma via dynamics and productions of heavy quarks in proton-proton and heavy ion collisions at the LHC with CMS detector
… to the inner workings of Quark-Gluon Plasma (QGP) in large ion collisions and the origin of the collectivity in small systems. In this thesis, data collected by the CMS detector at the Large Hadron Collider (LHC) from 2016 to 2018 are analyzed. The elliptic flow (v2{2}) and v2{4}) for charm …
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Quarkonium Suppression in pPb Collisions at CMS and Timing Detectors for Future Collider Experiment
… the existence of the quark–gluon plasma (QGP), yet recent experimental results suggest that QGP-like phenomena may also emerge in smaller systems such as pp and pPb collisions. Quarkonium, bound states of heavy quark–antiquark pairs, provide sensitive probes in this context because their …
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Heavy quark interaction in Hot QCD matter: open charm and bottom production in relativistic Heavy-Ion Collisions
… a new state of matter, the Quark-Gluon Plasma (QGP). Numerical solutions of QCD on lattice (lQCD) predict that such transition is properly a crossover at almost zero baryon density and with a critical temperature $T_c \approx 155$ $MeV$. The QGP state of matter is still presently studied in …
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Probing the Quark-Gluon Plasma properties through Heavy Quarks' dynamics: transport coefficients and elliptic flow
… stato di materia chiamato Quark-Gluon Plasma (QGP). Calcoli numerici basati sulla soluzione della QCD su reticolo (lQCD) hanno mostrato che questa transizione di fase è in realtà un crossover che si verifica ad una temperatura critica Tc=155 MeV. Lo studio della materia nucleare in condizioni …
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Study of the AdS/CFT correspondence and its applications to strongly coupled phenomena
… tales como el plasma de quarks y gluones (QGP), actualmente generado en colisiones de iones pesados, así como sistemas bidimensionales, con posibles aplicaciones a materia condensada. Hemos examinado las relaciones entre coeficientes de transporte, i.e. cantidades que indican la respuesta a …
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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
… 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. Among different orders of azimuthal flow, the second order elliptic flow receives keen attention and will be analyzed in the …
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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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Short path length pQCD corrections to energy loss in the quark gluon plasma
… at LHC hint at the creation of a hot, uid-like QGP medium. The seemingly conflicting measurements of non-zero particle correlations and RpA that appears to be consistent with unity demand a more careful analysis of the mechanisms at work in such ostensibly minuscule systems. We study the way in …
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Study of parton energy loss in heavy ion collisions using charged particle spectra measured with CMS
… 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 examined as a …
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