Spectroscopy, leptonic decays and the nature of heavy quarkonia
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Spectroscopy, leptonic decays and the nature of heavy quarkonia

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Spectroscopy, leptonic decays and the nature of heavy quarkonia

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Doménech Garret, Juan Luis; Sanchis Lozano, Miguel Ángel
Aquest document és un/a article, creat/da en: 2008
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.

    Doménech Garret, Juan Luis Sanchis Lozano, Miguel Ángel 2008 Spectroscopy, leptonic decays and the nature of heavy quarkonia Physics Letters B 669 1 52 57
http://dx.doi.org/10.1016/j.phystetb.2008.09.021
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