Full formula for heavy quarkonium energy levels at next-to-next-to-next-to-leading order
نویسندگان
چکیده
منابع مشابه
Heavy-quarkonium Production at Next-to-leading Order
The factorization formalism of nonrelativistic quantum chromodynamics (NRQCD) provides a rigorous theoretical framework for the description of heavy-quarkonium production and decay that is renormalizable and predictive.1 Theoretical predictions are decomposed into sums over products of short-distance coefficients, which can be calculated perturbatively as expansions in the strong-coupling const...
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The theoretical study of the nonrelativistic heavy quark-antiquark system [1] and its application to bottomonium [2] and toponium [3] physics is of special interest because it relies entirely on the first principles of QCD. The system in principle allows for a perturbative treatment with the nonperturbative effects being well under control and with no crucial model dependence. This makes the he...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2014
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2014.10.010