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15761por CMS Collaboration“…The $4\ell$ analysis uses the ZZ invariant mass distribution as well as a matrix element likelihood discriminant to separate the ZZ components originating from gluon- and quark-initiated processes. The $2\ell 2\nu$ analysis relies on the transverse mass or missing transverse energy distributions in jet categories. …”
Publicado 2014
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15762por Tricoli, Alessandro“…In particular, associated production of W or Z bosons with light-flavour jets is a powerful tool for testing perturbative QCD calculations and Monte Carlo generators, while analogous events with heavy-flavour jets can constrain the quark flavour content of the proton. Furthermore, events with a Z boson produced with two well-separated jets can be used to distinguish electroweak and strong production mechanisms, and constrain signals of physics beyond the Standard Model.…”
Publicado 2014
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15763por Schoefbeck, Robert“…This strategy retains sensitivity for mass configurations where signals of direct production of the lighter top squark are hard to distinguish from the top quark pair production background. For the case of the gluino, a soft lepton analysis improves sensitivity for small mass differences between the gluino and the lightest neutralino. …”
Publicado 2014
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15764por Caminal Armadans, Roger“…The analysis has been optimized for the stop decaying into a charm quark plus a neutralino SUSY signal and it is carried out in several signal regions differing by the requirements on the $p_T$ of the leading jet and the missing transverse energy. …”
Publicado 2014
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15765por Astalos, Robert“…Bose-Einstein correlations provide a unique opportunity for detailed understanding of the space-time geometry of the hadronization region, for determining the size and shape of the source from which particles are emitted and for interpreting of quark confinement effects. The ATLAS collaboration has performed a measurement of Bose-Einstein correlations of the pairs of charged particles in p-p collisions at 900 GeV and 7 TeV up to very high charged-particle multiplicities.…”
Publicado 2014
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15766por Chen, Zhenyu“…The wide $p_T$ coverage and rich sample of high multiplicity pPb events allow (1) a precise examination of the mass ordering effect of $v_n$ at low $p_T$ as predicted by hydrodynamics for a collectively expanding medium; (2) exploration of possible constituent quark number scaling of $v_2$ and $v_3$ between mesons and baryons as was observed in high-energy nucleus-nucleus collisions.…”
Publicado 2014
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15767por The ATLAS collaboration“…The fragmentation differences between jets initiated by a quark and jets initiated by a gluon lead to a flavour dependence in the jet energy scale. …”
Publicado 2015
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15768“…The subjects covered by the Summer School focussed on two main issues currently under active investigation and which will be pursued with the new facilities: the transition from nucleonic to quark degrees of freedom in the decription of nuclear reactions, and the behavior of nuclear matter as one approaches extreme densities and temperatures. …”
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15769“…The original ideas of Mott for such a transition in solids have been adapted to describe a broad variety of phenomena in condensed matter physics (solids, liquids, and fluids), in plasma and cluster physics, as well as in nuclear physics (nuclear matter and quark-gluon systems). The book gives a comprehensive overview of theoretical methods and experimental results of the current research on the Mott effect for this wide spectrum of topics. …”
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15770por Tu, Zhoudunming“…Finally, the possible constituent quark number of scaling of $v_2$ between mesons and baryons may indicate the deconfinement in small systems.…”
Publicado 2015
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15771por Guilbaud, Maxime“…The new results presented here provide new insights into the longitudinal dynamics of relativistic heavy ion collisions, and help improve the three-dimensional modeling of the evolution of the strongly-coupled quark gluon medium.…”
Publicado 2016
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15772por CMS Collaboration“…Minor backgrounds from diboson and top-quark processes are estimated from Monte-Carlo simulation. …”
Publicado 2016
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15773por Trofymov, Artur“…In addition, ratios of the cross sections for the production of single Z bosons and topquark pairs have been derived at various centerofmass energies. …”
Publicado 2016
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15774por Soto, Rodrigo“…Besides these systems that are studied in detail, concepts are applied to some modern examples including the quark–gluon plasma, the motion of bacterial suspensions, the electronic properties of graphene or the dynamics of a vortex gas, among others. …”
Publicado 2016
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15775por Christakoglou, Panos“…--HTML--><p>Anisotropic flow studies play a crucial role in the characterization of the nature of the quark gluon plasma (QGP) created in collisions of heavy ions at ultra-relativistic energies. …”
Publicado 2017
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15776por Glatzer, Julian“…Final states with two hadronic tau-lepton decays requiring either the presence or absence of b-jets are considered and the selection is optimised for Higgs bosons in b-quark associated and gluon-fusion production. No statistically significant excess over the expected background is observed and exclusion limits at the 95% confidence level are derived in combination with the h/A/H -> mu mu, h/A/H -> tau_e tau_mu and h/A/H -> tau_lep tau_had decay channels. …”
Publicado 2017
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15777por Tsiskaridze, Vakhtang“…The first analysis is targeting the decay channel where a top squark decays to a bottom quark and a chargino, with subsequent decay of the chargino to a W-boson and a neutralino. …”
Publicado 2017
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15778por CMS Collaboration“…A search for the standard model Higgs boson produced with high transverse momentum decaying to a bottom quark-antiquark pair has been performed using a data set of pp collisions at $\sqrt{s}=13~\mathrm{TeV}$ collected with the CMS experiment at the LHC. …”
Publicado 2017
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15779por Vernieri, Caterina“…--HTML--><p>An inclusive search for the standard model Higgs boson produced with high transverse momentum decaying to a bottom-antibottom quark pair has been performed using a data set of pp collisions at √s = 13 TeV collected with the CMS experiment at LHC. …”
Publicado 2017
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15780por Trombetta, Giuseppe“…The study of quarkonia in heavy-ion collisions has been the subject of intense experimental and theoretical effort, ever since their production was predicted to be sensitive to the formation of a deconfined state of strongly-interacting matter, known as the Quark-Gluon Plasma (QGP). In p-Pb collisions, Cold Nuclear Matter (CNM) effects, such as nuclear shadowing or partonic energy loss, are expected to influence quarkonium production. …”
Publicado 2017
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