241 research outputs found

    Heavy quarkonium: progress, puzzles, and opportunities

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    A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the BB-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations. The plethora of newly-found quarkonium-like states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of c\bar{c}, b\bar{b}, and b\bar{c} bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hot- and cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.Comment: 182 pages, 112 figures. Editors: N. Brambilla, S. Eidelman, B. K. Heltsley, R. Vogt. Section Coordinators: G. T. Bodwin, E. Eichten, A. D. Frawley, A. B. Meyer, R. E. Mitchell, V. Papadimitriou, P. Petreczky, A. A. Petrov, P. Robbe, A. Vair

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    Grensoverschrijdend faillissementsrecht in Europees perspectief. Een studie naar het faillissement in het internationaal privaatrecht van Nederland, België en Duitsland Deventer:Kluwer ,2000 9026835558

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    Contains fulltext : 126363.pdf (publisher's version ) (Open Access)T.M. Bos Grensoverschrijdend faillissementsrecht in Europees perspectief. Een studie naar het faillissement in het internationaal privaatrecht van Nederland, België en Duitsland Deventer:Kluwer ,2000 902683555

    Noot bij: Rb. Zwolle 18 juli 2001, JOR, 2002, 85 (Verklaring derdenbeslag)

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    Noot bij: Rb. Middelburg 31 juli 2002, JOR, 2003, 18 (Huur bedrijfsruimte)

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    Noot bij: Hoge Raad 19 december 1997, JOR, 1998, 40 (Bepaaldheid van vorderingen in akte van cessie)

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    Item does not contain fulltext19 december 199
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