“…These particles would eventually decay into quarks and gluons, which manifestas particle jets in the detector. …”
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“…It is designed to study the physics of strongly interacting matter and the quark-gluon plasma in heavy-ion collisions. It contains a large volume Time Projection Chamber (TPC) as its main tracking device. …”
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“…Quark Gluon Plasma (QGP) is an unavoidable consequence of Quantum Chromodynamics (QCD). …”
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“…Two specific BSM models are excluded within certain mass ranges: the narrow leptophobic Z' boson with mass 600 - 1150 GeV and the wide Kaluza-Klein gluon with a mass below 1.5 TeV. These results represent a significant improvement on those of previous searches performed at the ATLAS experiment, which did not use jet substructure techniques. …”
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“…The primary beauty-antibeauty quark b b pair production mechanisms in perturbative QCD are referred to as avor creation, avor excitation, and gluon splitting. These three mechanisms produce b b pairs with characteristic kinematic behavior, which contribute dierently to the shape of the dierential b b production cross section with respect to the dierence in the azimuthal angle and the combined separation variable R = p 2 + 2 between the beauty and antibeauty quarks ( b and b , respectively); with being the change in the pseudorapidity = ln ( tan ( = 2)), being the polar angle. …”
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“…The main background is coming from the QCD processes with at least six quaks or gluons in the final state. This processes is estimated using dedicated data-driven techniques. …”
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“…This work focuses on the search for scalar gluons, commonly dubbed $sgluons$, predicted in various New Physics theories. …”
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“…The selection of data events is based on the kinematic properties of a Higgs boson produced via vector-boson fusion or a boosted Higgs boson resulting mainly from gluon fusion. A deviation from the predicted background is found in data with an observed (expected) significance of 1 (1.7) $\sigma$ at $m_{H} = 125$ GeV. …”
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“…The signalsignature comprises pair produced gluon superpartners, gluinos, decaying each to a topantitop quark pair and a neutralino – the lightest supersymmetric particle. …”
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“…This phase is called the Quark Gluon Plasma (QGP). Hadron production measurements in proton-proton collisions at the Large Hadron Collider (LHC) energies can observe new phenomena which must be a frontier in the particle physics and allow validation of the predictive power of the QCD and can provide further constrains on pQCD theory for LHC energies. …”
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“…In the SM framework hadrons are colourless particles composed of quarks and gluons that interact by means the strong interactions described by Quantum chromodynamics (QCD). …”
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“…The suppression of quarkonia mesons is one of the signature indications of the presence of a quark-gluon plasma, the colored, asymptotically free state of matter believed to have existed moments after the Big Bang, and recreated by colliding heavy-ions. …”
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“…ALICE was built to study hadronic collisions (pp and A-A) and, in particular, aims to investigate the $Quark-Gluon Plasma$ (QGP), state of the matter during the first instants of life of the universe. …”
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“…Recently, proton--proton collisions with high charged particle multiplicities have been found to exhibit phenomena similar to those attributed to the quark--gluon plasma formation in heavy-ion collisions. Dielectron measurements may contribute to a better understanding of the underlying physics processes in such collisions.…”
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“…For proton colliders exclusive production means that colliding protons after the collision do not get destroyed but through photons (25% of times) or gluons (75% of times) loose some of their momentum and create in our case top and anti top quark pair (see Feynman diagram, figure 1). …”
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“…. \\ A cut-based analysis has been performed to enhance the sensitivity to the signal considering the kinematic features of the two dominant Higgs boson production modes: gluon fusion and vector-boson fusion. \\ The results of a profile likelihood fit to the di-tau mass distribution will be presented considering the $\tau_{lep}\tau_{had}$ standalone fit, as well as the combination of all possible tau pair decay channels. …”
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“…To assess the properties of the quark-gluon plasma formed in heavy ion collisions, correlations between the mean transverse momentum, $p_{\mathrm{T}}$, and the magnitude of the flow harmonics, $v_n$, are measured by the ATLAS experiment at the LHC. …”
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“…Recently the full Next-to-Leading Order (NLO) dipole picture total cross sections have become available for DIS [4-6], and a working factorization scheme has been deviced which substracts the soft gluon divergence present at NLO [7]. We report our ongoing work in which we make the first comparisons of the NLO DIS total cross sections to HERA data. …”
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“…However, W+jets are dominated by quark jet and H+jet are mainly gluon jet, the comparison of W+jet and H+jet would provide complementary information of jet quenching. …”
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“…The recent reported $D^0$ meson radial profiles in jets measured by CMS collaboration provide new experimental constraints on the mechanisms of heavy flavor production in proton-proton collisions and give new insights into the in-medium interaction mechanisms of heavy quarks inside the quark-gluon plasma (QGP). In this talk, we present the first theoretical calculations of the charm and bottom radial distributions relative to the jet axis both in p+p and Pb+Pb collisions at $\sqrt{s_{NN}}=5.02$TeV. …”
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