Spectroscopy, leptonic decays and the nature of heavy quarkonia

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2008
Author
Domenech-Garret, J. L. (Juan Luis)
Sanchis-Lozano, Miguel-Angel
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Domenech-Garret, J. L. (Juan Luis); Sanchis-Lozano, Miguel-Angel; . (2008) . Spectroscopy, leptonic decays and the nature of heavy quarkonia. Physics Letters B, 2008, vol. 2008, núm. 1, p. 52-57. https://doi.org/10.1016/j.physletb.2008.09.021.
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Abstract
We examine the electronic width ratios of ϒ resonances below the View the MathML sourceBB¯ threshold by means of an effective (Cornell-type) QCD potential incorporating 1/mb1/mb corrections obtained from a prior fit to the bottomonium spectrum. From our analysis we conclude that the ϒ(2S)ϒ(2S) and ϒ(3S)ϒ(3S) states should belong to the strong-coupling (nonperturbative) regime while the ϒ(1S)ϒ(1S) state should belong to the weak-coupling (perturbative) regime, in agreement with a previous study based on radiative decays.
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http://hdl.handle.net/10459.1/57977
DOI
https://doi.org/10.1016/j.physletb.2008.09.021
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Physics Letters B, 2008, vol. 2008, núm. 1, p. 52-57
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cc-by (c) Elsevier, 2008
Except where otherwise noted, this item's license is described as cc-by (c) Elsevier, 2008