Quarkonium Spectroscopy and Perturbative QCD: A New Perspective

Details Quarkonium Spectroscopy and Perturbative QCD: A New Perspective Quarkonium Spectroscopy and Perturbative QCD: A New Perspective

2001-05-23

arxiv.org/abs/hep-ph/0105240v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 10 figures, Talk given at ``Accelerator and Particle Physics Institute (APPI 2001)'', Morioka, Japan, Feb. 20--22, 2

Scientific paper

We report new aspects of the recent theoretical progress in heavy quarkonium physics. (1) Contrary to wide beliefs, the gross structure of the bottomonium spectrum is described well by the non-relativistic boundstate theory based on perturbative QCD. (2) This leads to a new physical picture of the bottomonium states: the boundstate mass is composed mainly of the self-energies of b and bbar accumulated inside the boundstate. (3) A connection to the conventional phenomenological potential-model approaches is provided.

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