منابع مشابه
Heavy Quarkonium ∗
I review heavy quarkonium physics in view of recent experimental results. In particular, I discuss new results on spin singlet states, photon and hadronic transitions, D−states and discovery of yet unexplained narrow X(3872) state. 1 Quarkonia Quarkonium is a bound state of a quark and its anti-quark. Some properties of light and heavy quarkonia are compared to properties of positronium in Tabl...
متن کاملmΛQCD scale in heavy quarkonium
We investigate the effects produced by the three-momentum scale √ mΛQCD in the strong coupling regime of heavy quarkonium. We compute the leading non-vanishing contributions due to this scale to the masses and inclusive decay widths. We find that they may provide leading corrections to the S-wave decay widths but only subleading corrections to the masses. Preprint submitted to Elsevier Science ...
متن کاملHeavy Quarkonium Physics
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 quarko...
متن کاملHeavy Quarkonium Effective Theory
We formulate a QCD-based effective theory approach to heavy quarkonia-like systems as c̄c and b̄b resonances and Bc states. We apply the method to inclusive decays, working out a few examples in detail. CERN-TH.7468/94 September 1994
متن کاملHeavy Quarkonium Physics Theoretical Status *
Systems made by two heavy quarks are particularly interesting from the theoretical point of view. They are characterized by the energy scales typical of a nonrelativistic bound system: the scale of the mass m, the scale of the relative momentum p ∼ mv ∼ r, the scale of the binding energy E ∼ mv, v ≪ 1 being the quark velocity and r the radius of the system. This is similar to what happens for t...
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ژورنال
عنوان ژورنال: Physics Reports
سال: 2020
ISSN: 0370-1573
DOI: 10.1016/j.physrep.2020.02.006