G. T. Bodwin

Publications (4)0 Total impact

• Source

  Available from: Estia Eichten

  Article: Heavy quarkonium: progress, puzzles, and opportunities

  N. Brambilla, S. Eidelman, B. K. Heltsley, R. Vogt, G. T. Bodwin, E. Eichten, A. D. Frawley, A.B. Meyer, R. E. Mitchell, V Papadimitriou, [......], M. A. Sanchis-Lozano, E. Scomparin, P. Senger, F. Simon, S. Stracka, Y. Sumino, M. Voloshin, C Weiss, H K Wöhri, C. Z. Yuan
  [show abstract] [hide abstract]
  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.
  10/2010;
• Source

  Available from: J. Soto

  Article: Heavy Quarkonium Physics

  N. Brambilla, M Krämer, R. Mussa, A. Vairo, G. Bali, G. T. Bodwin, E. Braaten, E. Eichten, S. Eidelman, S. Godfrey, [......], Yu. Sumino, T. Teubner, J Tseng, R. Vogt, P Wang, B. Yabsley, C. Z. Yuan, F. Zantow, Z G Zhao, A Zieminski
  [show abstract] [hide abstract]
  ABSTRACT: This report is the result of the collaboration and research effort of the Quarkonium Working Group over the last three years. It provides a comprehensive overview of the state of the art in heavy-quarkonium theory and experiment, covering quarkonium spectroscopy, decay, and production, the determination of QCD parameters from quarkonium observables, quarkonia in media, and the effects on quarkonia of physics beyond the Standard Model. An introduction to common theoretical and experimental tools is included. Future opportunities for research in quarkonium physics are also discussed. Comment: xviii + 487 pages, 260 figures. The full text is also available at the Quarkonium Working Group web page: http://www.qwg.to.infn.it
  12/2004;
• Source

  Available from: Aldo Deandrea

  Article: Hard probes in heavy ion collisions at the LHC: heavy flavour physics

  M. Bedjidian, D. Blaschke, G. T. Bodwin, N. Carrer, B. Cole, P. Crochet, A. Dainese, A. Deandrea, S. Frixione, P. Hoyer, [......], H. Niemi, S. Peigne, P. Petreczky, A. D. Polosa, H. Satz, H Takai, S Tapprogge, R. L. Thews, E. Vercellin, R. Vogt
  [show abstract] [hide abstract]
  ABSTRACT: We present the results from the heavy quarks and quarkonia working group. This report gives benchmark heavy quark and quarkonium cross sections for $pp$ and $pA$ collisions at the LHC against which the $AA$ rates can be compared in the study of the quark-gluon plasma. We also provide an assessment of the theoretical uncertainties in these benchmarks. We then discuss some of the cold matter effects on quarkonia production, including nuclear absorption, scattering by produced hadrons, and energy loss in the medium. Hot matter effects that could reduce the observed quarkonium rates such as color screening and thermal activation are then discussed. Possible quarkonium enhancement through coalescence of uncorrelated heavy quarks and antiquarks is also described. Finally, we discuss the capabilities of the LHC detectors to measure heavy quarks and quarkonia as well as the Monte Carlo generators used in the data analysis.
  12/2003;
• Article: Hard probes in heavy ion collisions at the LHC: heavy flavour physics

  Marc Bedjidian, D. Blaschke, G. T. Bodwin, N. Carrer, B. Cole, Philippe Crochet, A. Dainese, A. Deandrea, Stefano Frixione, P. Hoyer, [......], H. Niemi, S Peigné, P. Petreczky, Antonio Polosa, Helmut Satz, H Takai, Stefan Tapprogge, R. L. Thews, Ermanno Vercellin, R. Vogt
  [show abstract] [hide abstract]
  ABSTRACT: We present the results from the heavy quarks and quarkonia working group. This report gives benchmark heavy quark and quarkonium cross sections for $pp$ and $pA$ collisions at the LHC against which the $AA$ rates can be compared in the study of the quark-gluon plasma. We also provide an assessment of the theoretical uncertainties in these benchmarks. We then discuss some of the cold matter effects on quarkonia production, including nuclear absorption, scattering by produced hadrons, and energy loss in the medium. Hot matter effects that could reduce the observed quarkonium rates such as color screening and thermal activation are then discussed. Possible quarkonium enhancement through coalescence of uncorrelated heavy quarks and antiquarks is also described. Finally, we discuss the capabilities of the LHC detectors to measure heavy quarks and quarkonia as well as the Monte Carlo generators used in the data analysis.