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Heavy quarkonium: progress, puzzles, and opportunities

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Heavy quarkonium: progress, puzzles, and opportunities

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dc.contributor.author Brambilla, Nora
dc.contributor.author Sanchis Lozano, Miguel Ángel
dc.date.accessioned 2015-05-22T06:52:20Z
dc.date.available 2015-05-22T06:52:20Z
dc.date.issued 2011
dc.identifier.citation Brambilla, Nora Sanchis Lozano, Miguel Ángel 2011 Heavy quarkonium: progress, puzzles, and opportunities European Physical Journal C 71 2 1534
dc.identifier.uri http://hdl.handle.net/10550/43939
dc.description.abstract 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 B-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.
dc.language.iso eng
dc.relation.ispartof European Physical Journal C, 2011, vol. 71, num. 2, p. 1534
dc.subject Física
dc.title Heavy quarkonium: progress, puzzles, and opportunities
dc.type journal article es_ES
dc.date.updated 2015-05-22T06:52:21Z
dc.identifier.doi 10.1140/epjc/s10052-010-1534-9
dc.identifier.idgrec 069314
dc.rights.accessRights open access es_ES

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