“…The recoil of the Z-boson is sensitive to quark and gluon emissions and is used to determine the strong coupling constant in a novel approach. …”
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“…The only low energy numerical inputs are the pion mass and the quark and gluon condensates. Based on 2309.12402 with Martin Kruczenski.…”
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“…We illustrate this method with the resummation of soft-gluon enhancements of the inclusive Drell-Yan cross section, in both DIS and \overline{{\rm MS}} factorization schemes.…”
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“…Within errors and taking into account the sensitivity of the analysis, the JETSET modelling of the gluon fragmentation into isoscalar mesons is in agreement with the experimental results for the measured region.…”
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“…If a region of deconfined quarks and gluons is subsequently formed, a new mechanism for the formation of heavy quarkonium bound states will be activated. …”
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“…This process is followed by S decay into two gluons or two photons, leading to final states with three photons or two jets and one photon. …”
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“…A new state of matter - the quark-gluon plasma - may be produced in $^{32}$S interactions with heavy nuclei A (Ag, Cu, Pb and S targets) at beam momenta up to 200 GeV/c per nucleon. …”
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“…The supersymmetric partners of the quarks and gluons could be produced with very large rates at the LHC and a discovery for masses above 2~TeV is possible within the first year.…”
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“…The samples of Higgs decays H->bb (H->gg,uu,cc) with mH=100 GeV and mH=400 GeV are used as signal (background) events, in full rapidity coverage (|eta| < 2.5) and for low luminosity operation.For an algorithm efficiency of 50%, rejections of 470 against u-jets for mH=100 GeV (resp.55 for mH=400 GeV), 209 (resp.43)against gluon jets and of 44 (resp.22) against c-jets can be achieved.…”
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“…We find that the dominant background is ttbar + bbar, coming from a massive virtual gluons splitting into two b-quarks. We conclude that it would be very worthwhile to develop a b-quark tagging algorithm with high efficiency and good rejection against mistags specifically for this signal. …”
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“…We compare the NLO differential cross sections obtained in the bottom parton picture with the gluon-initiated process and observe remarkable consistency. …”
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“…Heavy-ion collisions are a unique tool to study nuclear matter under extreme conditions of density and temperature like the ones present a few moments after the Big Bang, where nuclear matter may be composed of a plasma of almost free quarks and gluons. Its production is the main interest of the ALICE experiment at the LHC collider, where Pb-Pb collisions at 5.5A TeV will be made. …”
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“…Both states are likely to be a tetra-quark, i.e. qq¯+qq¯or a gluonic hybrid, a qq¯object with an excited gluon inside it.Section 2 is devoted to a brief discussion of the central production of resonances, which is being investigated by both COMPASS and ALICE collaborations. …”
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“…Under these extreme conditions, a deconfined partonic state, called Quark-Gluon Plasma, is formed. The measurement of charmonia and bottomonia in AA collisions is expected to provide essential information about the QGP properties. …”
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“…The parton energy loss in a quark-gluon plasma created in Pb–Pb collisions at s=2.76 TeV is discussed based on the measurements of semi-inclusive charged particle jets correlated with a high- pT hadron, the nuclear modification factor ( R AA ) for identified hadrons and D-mesons. …”
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“…As exclusive photoproduction of vector mesons is sensitive to the gluon distribution of the interacting target it allows one to study saturation and shadowing phenomena. …”
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“…The continuum of electron-positron pairs, produced in heavy ion collisions, provides an excellent probe of quark-gluon plasma formation in nucleus-nucleus collisions. …”
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“…LHCb is uniquely suited to make measurements of production cross-sections in the forward region, as our sensitivity to the gluon parton distribution function in the small-x region can be used to improve the understand- ing of the proton structure. …”
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“…Heavy quarks are essential probes of the evolution of the Quark-Gluon Plasma (QGP) created in ultra-relativistic heavy-ion collisions. …”
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“…The ALICE experiment is designed and optimised to study the properties of the Quark-Gluon Plasma (QGP), a new state of matter, which is expected to be created at the high energy densities reached at the LHC. …”
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