“…In proton-proton collisions at the LHC, pairs of top and anti-top quarks are expected to be mostly produced through gluon fusion. Making use of the large number of top quark pairs collected, we present measurements of the Atlas experiment using $4.7 \textrm{ fb}^{-1}$ of data. …”
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“…Production of vector bosons plus heavy flavours  studies c and b­quark parton distribution functions (PDFs) and gluon splitting effects.   Measurements of W+c and Z+b(b) are reported and compared to predictions based  on various PDFs in 4­ and 5­flavour schemes. …”
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“…Production of vector bosons plus heavy flavors studies c and b quark parton distribution functions (PDFs) and gluon splitting effects. Measurements of W + c and Z + b(b) are reported and compared to predictions based on various PDFs in 4 and 5 flavour schemes. …”
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“…The central state X can be a W-pair from photon-photon interactions, a set of high-ET jets from gluon collisions, among others, with M(X) obtained directly as well as from the two outgoing protons. …”
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“…Isolated prompt photons provide a direct probe of short- distance physics, complementary to that provided by measurements of jets or vector-bosons and are sensitive to the gluon density of the proton. The inclusive prompt photon cross sections have been measured by the ATLAS collaboration at various centre-of-mass energies of pp collisions over a wide range of transverse momenta. …”
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“…The algorithm achieves an identification efficiency of typically 50-60\%, with misidentification rates for quark and gluon jets, electrons, and muons that vary between per mille and percent levels.…”
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“…Many new physics scenarios beyond the Standard Model predict the presence of narrow or broad resonances decaying to a pair of quarks/gluons, charged/neutral leptons, photons and their combinations, or a multi-jet final state. …”
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“…Complementary to the underlying event analysis, the observation of long-range two-particle correlations in high energy heavy ion collisions opens opportunities to explore QCD in quark gluon plasma, the hot dense matter created in heavy ion collisions. …”
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“…Jet charge is an estimator for the electric charge of a quark, antiquark or gluon initiating a jet. It is based on the momentum-weighted sum of the measured electric charges of the jet constituents. …”
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“…The CMS hadrons-plus-strips (HPS) algorithm that was developed to reconstruct tau leptons in their hadronic decays demonstrated a good performance in the LHC Run-1; the algorithm achieves an identification efficiency of 50 -- 60\% with a probability for quark and gluon jets, electrons, and muons to be misidentified as $\tau$ lepton between per cent and per mille levels. …”
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“…In addition, upper limits on nonresonant Higgs pair production are also set and compared to the SM Higgs pair production cross section via gluon fusion. The observed data is in agreement with standard model predictions.…”
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“…The properties of the quark gluon plasma can be studied by comparing the nature of hard scatters in a vacuum with those in a heavy ion collision. …”
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“…Jet and heavy flavour muon measurements in PbPb collisions, aimed to test the properties of the Quark Gluon Plasma with the view of better understanding of jet quenching, are also presented.…”
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“…This proceeding summarizes some of the recent ATLAS results on inclusive searches for the supersymmetric partners of quarks and gluons in proton-proton collisions at a centre-of-mass energy of 13 TeV and with an integrated luminosity of 3.2 fb$^{-1}$. …”
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“…A deep neural network is used to do multi-classification of jets that origin from a b-quark, two b-quarks, a c-quark, two c-quarks or light colored particles (u, d, s-quark or gluon). The performance was measured in both, data and simulation. …”
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“…As you read this, billions of neutrinos from the sun are passing through your body, antimatter is sprouting from your dinner and the core of your being is a chaotic mess of particles known only as quarks and gluons. Following the recent discovery of the Higgs Boson, Why The Universe Exists takes you deeper into the world of particle physics, exploring how the universe functions at the smallest scales. …”
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“…The impact of the presented measurement on the gluon distribution function is illustrated through a QCD analysis at next-to-next-to leading order.…”
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“…Ultrarelativistic heavy ion collisions at the LHC produce the Quark Gluon Plasma. Jets are a useful probe to study this state of matter as they are produced at the early stages of the collisions and are expected to be modified as propagating through the medium. …”
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“…The Higgs boson mass is measured to be 124.98 +/- 0.19 (stat) +/- 0.21 (syst) GeV. The rates for gluon fusion, vector-boson fusion, VH, and ttH production, as well as kinematic subdivisions of these processes, are found to be compatible with the Standard Model. …”
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“…At a fundamental level, the interaction of quarks with gluon fields lies at the heart of our understanding of the strong nuclear force. …”
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