“…QCD predicts that under such conditions a phase transition from a system composed of colourless hadrons to a Quark-Gluon Plasma (QGP) should occur. A rich ultrarelativistic heavy-ion physics programme is under way both at BNL-AGS and at CERN-SPS since 1986. …”
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“…Searches for stable, hadronizing scalar-quark and gluino production are performed using the data collected with the ALEPH detector at LEP. Gluon splitting into a gluino or a scalar-quark pair is searched for at centre-of-mass energies around the Z resonance, in the e+e- -> q qbar gluino gluino and q qbar squark antisquark processes. …”
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“…This work is aimed at studying the performance of the ALICE detector for measuring charm production in heavy ion collisions at the LHC and for investigating the properties of the deconfined quark-gluon medium formed in central nucleus-nucleus reactions by a comparison of its `opacities' to massive (charm) quarks and massless partons. …”
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“…The author takes account of transverse motions both of partons inside proton (p/sub T/) /sub p to q/, and of hadrons fragmented from quark (gluon) (k/sub T/) /sub 1 to h/. In addition, the effects of scale violation are taken into account. …”
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“…The extra lightweight mechanical support structures, together with the novel pixel detectors, provide a record-breaking total radiation length of 0.3% X 0 per layer, which will make it possible to considerably extend the physical program of investigations of the quark-gluon plasma in ultra-relativistic heavy-ion collisions at the Large Hadron Collider. …”
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“…The ALICE Collaboration at the LHC studies heavy-ion collisions to investigate the properties of the Quark-Gluon Plasma (QGP). Heavy quarks (charm and beauty) are effective probes for this purpose. …”
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“…ALICE (A Large Ion Collider Experiment) is designed to study the strongly in teracting matter, the Quark-Gluon Plasma (QGP), created in heavy-ion collisions at LHC energies. …”
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“…The ALICE experiment at the LHC is optimized to study the quark-gluon plasma (QGP), created in heavy-ion collisions. …”
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“…In our calculation we augmented the Standard Model with three additional operators: modifications of the top and bottom Yukawa couplings, and a point-like Higgs coupling to gluons. We present resummed transverse-momentum spectra including the effect of these operators at NLL+NLO accuracy and study their impact on the shape of the distribution. …”
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“…ALICE (A Large Ion Collider Experiment) is the dedicated heavy-ion detector studying the physics of strongly interacting matter and the quark-gluon plasma at the CERN LHC (Large Hadron Collider). …”
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“…The NLO QCD fit of $g_1$ world data gives well constrained quark helicity distributions; gluons are poorly determined. Quark helicity contribution to nucleon spin is $0.26 < \Delta \Sigma < 0.36$. …”
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“…A major upgrade of the Inner Tracking System (ITS) of the ALICE experiment at LHC is currently under preparation with the aim of exploiting the increased Pb-Pb luminosity expected during Run 3 and Run 4 after 2020, which will enable to make a detailed study of the properties of the Quark-Gluon Plasma. The new ITS, which will be installed during the Long Shutdown 2 (2019-2020), will increase the readout rate capability by more than two orders of magnitude while, at the same time, improving the tracking capability and the impact parameter resolution, especially at low transverse momentum.The new ultra-light tracker will be constructed with Monolithic Active Pixel Sensors to instrument the ~10 m2 ITS active surface, arranged on seven layers, with the inner layer as close as 23 mm from the interaction point.The CMOS chip (ALPIDE) which will equip the ITS is built in the TowerJazz 180 nm -CMOS imaging sensor process and has been custom designed to fulfil the stringent requirements of the new tracker.The chip R&D; phase finished in 2016 with the development of a chip whose performances fulfil and often exceed the project requirements. …”
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“…Quarkonia, i.e. bound states of heavy quarks (charm/bottom), provide remarkable probes of the hot and strongly-interacting medium, the quark gluon plasma (QGP), which is created during heavy-ion collisions. …”
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“…This makes it possible to study $\mathrm{J/}\psi$ exclusive photoproduction off protons in p--Pb collisions, which is sensitive to the gluon content of the target. Measuring the rapidity of the produced vector meson one can compute the centre-of-mass energy $W_{\gamma\mathrm{p}}$ of the photon--proton scattering. …”
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“…ALICE is the experiment specifically designed to study the Quark-Gluon Plasma (QGP) in heavy-ion collisions at the CERN LHC. …”
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“…The ALICE (A Large Ion Collider Experiment) detector at the LHC (Large Hadron Collider) is dedicated to the study of the properties of the hot and dense QCD matter (Quark–Gluon Plasma) produced in the nucleus-nucleus collisions at high energy. …”
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“…The LHC heavy-ion physics program aims at investigating the fundamental properties of nuclear matter under extreme conditions of energy density and temperature, where a transition to a Quark-Gluon Plasma (QGP) is expected. Jets, defined as sprays of hadrons resulting from the fragmentation of high-energy partons, are among the most powerful probes of QGP transport properties. …”
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“…In (ultra-)relativistic heavy-ion collisions, the strongly interactingmatter is predicted to undergo a phase transition into a plasma of deconfinedquarks and gluons (QGP) and quarkonia probe different aspects of this medium.However, the medium modification of quarkonium production includes also the contribution of cold nuclear matter effects (CNM), such as shadowing or nuclear break-up in addition to QGP effects. …”
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“…ALICE (A Large Ion Collider Experiment) is a heavy-ion detector studying the physics of strongly interacting matter and the quark - gluon plasma at CERN’s LHC (Large Hadron Collider). …”
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Enlace del recurso

“…Jets are well calibrated and established probes of the properties of Quark-Gluon Plasma (QGP), which is hot and dense QCD medium formed in relativistic heavy-ion collisions. …”
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