Mini-workshop on charmonium production at LHCb

Europe/Zurich
13/2-005 (CERN)

13/2-005

CERN

90
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Jean-Philippe Lansberg (IPN Orsay, Paris Sud U. / IN2P3-CNRS), Jibo He (University of Chinese Academy of Sciences (CN)), Lucio Anderlini (Universita e INFN, Firenze (IT)), Patrick Robbe (Universite de Paris-Sud 11 (FR)), Sergey Barsuk (Universite de Paris-Sud 11 (FR)), Yanxi Zhang (Universite de Paris-Sud 11 (FR)), Zhenwei Yang (Tsinghua University (CN))
Description

Since their observation in 1974, immediately interpreted as discovery of the cham quark, charmonium states represent powerful tools to investigate fundamental physics.

Their prompt production in pp collisions probes the strong interaction at the interplay of its perturbative and non-perturbative regimes. It can also help to understand a new dynamics of hadron collisions where multiple (hard) parton scatterings take place.

The production of charmonium states in b-hadron decays allows angular analyses to determine their quantum number and question the predictions of the quark model.

In this short workshop we wish to review the theoretical models describing quarkonium production and the recent results from the LHCb experiment in order to prioritize the future measurements and theoretical developments in the field. 

From an experimental perspective, we will focus on production studies reconstructing charmonium via decays to hadrons, which are unique to LHCb and which are accessible to a larger number of states and would allow theorists to further test and constrain quarkonium production mechanisms, just like the first ever measurement of prompt eta(c) inclusive hadroproduction by LHCb did.

Relevant reviews are:

  • Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions  [arXiv:1506.03981]
  • QCD and strongly coupled gauge theories: challenges and perspectives [arXiv:1404.3723]
  • Heavy quarkonium: progress, puzzles, and opportunities [arXiv:1010.5827]
  • Heavy Quarkonium Physics [arXiv:hep-ph/0412158]
Registration
Registration form
Participants
  • Alex Grecu
  • Andrii Usachov
  • Cesar Luiz Da Silva
  • Emi Kou
  • Francesco Bossu
  • Hua-Sheng Shao
  • Jean-Philippe Lansberg
  • Jibo He
  • John Matthew Durham
  • Liupan An
  • Lucio Anderlini
  • Marco Adinolfi
  • Patrick Robbe
  • Sergey Barsuk
  • Serhii Koliiev
  • Valery Pugatch
  • Yanxi Zhang
  • Yuanning Gao
  • Zhenwei Yang
    • 13:30 13:40
      Welcome 10m
      Speaker: Guy Wilkinson (University of Oxford (GB))
    • 13:40 14:00
      Impact of LHCb etac measurements on theory and prospects for new measurements using charmonia decays to hadrons 20m
      Speakers: Hua-Sheng Shao, Huasheng Shao (Centre National de la Recherche Scientifique (FR))
    • 14:00 14:20
      Prompt charmonia studies in LHCb 20m
      Speaker: Lucio Anderlini (Universita e INFN, Firenze (IT))
    • 14:20 14:40
      Charmonia in b-decays (LHCb) 20m
      Speaker: Andrii Usachov (Universite de Paris-Sud 11 (FR))
    • 14:40 15:00
      Charmonia in b-decays (theory) 20m
      Speaker: Emi Kou
    • 15:00 15:30
      Discussion 1 30m
    • 15:30 15:50
      Coffee break 20m
    • 15:50 16:10
      Triggering on charmonia decaying to hadrons (LHCb) 20m
      Speaker: Sascha Stahl (CERN)
    • 16:10 16:30
      LHCb results on pA collisions and prospects for non-1-- charmonia 20m
      Speaker: Francesco Bossu (Universite de Paris-Sud 11 (FR))
    • 16:30 16:50
      Associated production (LHCb) 20m
      Speakers: Yanxi Zhang (Universite de Paris-Sud 11 (FR)), Liupan An (Tsinghua University (CN))
    • 16:50 17:10
      Associated quarkonium production with LHCb 20m
      Speaker: Jean-Philippe Lansberg (IPN Orsay, Paris Sud U. / IN2P3-CNRS)
    • 17:10 17:40
      Discussion 2 30m