Heavy quarkonium: progress, puzzles, and opportunities

  title={Heavy quarkonium: progress, puzzles, and opportunities},
  author={Nora Brambilla and Simon I. Eidelman and Brian K. Heltsley and Ramona Vogt and Geoffrey T. Bodwin and Estia J. Eichten and A. D. Frawley and Andreas Bernhard Meyer and Ross E. Mitchell and Vaia Papadimitriou and P{\'e}ter Petreczky and Alexey A. Petrov and Patricia Robbe and Antonio Vairo and A. Andronic and R. Arnaldi and Pierre Artoisenet and Gunnar S. Bali and Alessandro Bertolin and Diego Bettoni and Jolanta Brodzicka and G. E. Bruno and Allen Caldwell and James Catmore and C.-h. Chang and Kuang-ta Chao and Eugene Chudakov and P. Cortese and P. Crochet and Alexey Drutskoy and Ulrich Ellwanger and Pietro Faccioli and A. Gabareen Mokhtar and X. Garcia i Tormo and Christoph Hanhart and Frederick A. Harris and Daniel M. Kaplan and Spencer R. Klein and H. Kowalski and J.P. Lansberg and E. B. Levichev and Vincenzo Paolo Lombardo and Carlos Lourenço and Fabio Maltoni and {\'A}gnes Ḿocsy and Roberto Mussa and F. S. Navarra and Matteo Negrini and Marina Nielsen and Stephen Lars Olsen and P. Pakhlov and Galina Pakhlova and Krisztian Peters and Antonio Davide Polosa and Wenbin Qian and Jian-wei Qiu and G. Rong and Miguel Angel Sanchis-Lozano and E. Scomparin and Peter Senger and Frank Simon and Simone Stracka and Yukinari Sumino and Mikhail B. Voloshin and Ch. Weiss and Hermine Katharina W{\"o}hri and Chang-zheng Yuan},
  journal={The European Physical Journal C},
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… 
Prospects for quarkonium studies at the high-luminosity LHC
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