Photoproduction of Quarkonium in Proton-proton and Nucleus-nucleus Collisions PDF Download
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Languages : en
Pages : 5
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Languages : en
Pages : 5
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Languages : en
Pages : 36
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We present a brief overview of the most relevant current issues related to quarkonium production in high energy proton-proton and proton-nucleus collisions along with some perspectives. After reviewing recent experimental and theoretical results on quarkonium production in pp and pA collisions, we discuss the emerging field of polarization studies. Afterwards, we report on issues related to heavy-quark production, both in pp and pA collisions, complemented by AA collisions. To put the work in broader perpectives, we emphasize the need for new observables to investigate the quarkonium production mechanisms and reiterate the qualities that make quarkonia a unique tool for many investigations in particle and nuclear physics.
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Languages : en
Pages : 185
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This report reviews the study of open heavy-flavour and quarkonium production in high-energy hadronic collisions, as tools to investigate fundamental aspects of Quantum Chromodynamics, from the proton and nucleus structure at high energy to deconfinement and the properties of the Quark-Gluon Plasma. Emphasis is given to the lessons learnt from LHC Run 1 results, which are reviewed in a global picture with the results from SPS and RHIC at lower energies, as well as to the questions to be addressed in the future. The report covers heavy flavour and quarkonium production in proton-proton, proton-nucleus and nucleus-nucleus collisions. This includes discussion of the effects of hot and cold strongly interacting matter, quarkonium photo-production in nucleus-nucleus collisions and perspectives on the study of heavy flavour and quarkonium with upgrades of existing experiments and new experiments. The report results from the activity of the SaporeGravis network of the I3 Hadron Physics programme of the European Union 7th Framework Programme.
Author: Palaiseau Workshop Three Days of Quarkonium Production in Proton-Proton and Proton-Nucleus Collisions 2010
Publisher:
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Category : Heavy particles (Nuclear physics)
Languages : en
Pages : 186
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Category :
Languages : en
Pages :
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Author: Elena G. Ferreiro
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Category :
Languages : en
Pages : 187
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Author:
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Category : Heavy particles (Nuclear physics)
Languages : en
Pages : 186
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Category :
Languages : en
Pages : 5
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The J/?,???????? and?c production yields are expected to be considerably suppressed in a quark-gluon plasma. In addition, the? states, with the possible exception of the 1S state, are also expected to be suppressed. However, in proton-nucleus collisions all the quarkonium production cross sections scale less than linearly with the number of binary nucleon-nucleon collisions. These 'cold nuclear matter' effects need to be accounted for before signals of the high density QCD medium can be identified in the measurements made in nucleus-nucleus collisions. There are two cold nuclear matter effects important for midrapidity quarkonium production: 'nuclear absorption', a final-state effect, and shadowing, an initial-state effect. We characterize these effects and study their energy and rapidity dependence.
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Languages : en
Pages : 17
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Author: Helmut Satz
Publisher: Springer Science & Business Media
ISBN: 3642835244
Category : Science
Languages : en
Pages : 354
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From the Editors Preface: "Quark Matter 1987 was attended by about 250 scientists, representing 75 research institutions around the world - the scientific community engaged in experimental and theoretical studies of high energy nuclear collisions. The central theme of the meeting was the possibility of achieving extreme energy densities in extended systems of strongly interacting matter - with the ultimate aim of creating in the laboratory a deconfined state of matter, a state in which quarks and gluons attain the active degrees of freedom. High energy accelerator beams and cosmic radiation projectiles provide the experimental tools for this endeavour; on the theoretical side, it is intimately connected to recent developments in the non-perturbative study of quantum chromodynamics. Phase transitions between hadronic matter and quark-gluon plasma are of basic interest also for our understanding of the dynamics of the early universe ... A very special feature of this Sixth Quark Matter Conference was the advent of the first experimental results from dedicated accelerator studies. These were conducted during 1986/87 at the AGS of Brookhaven National Laboratory ... and at the CERN SPS ... An intense discussion of these data formed the main activity of the meeting.
