Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Off-shell Suppression of Renormalons in Non-relativistic QCD Boundstates   We study an effect of the off-shellness of the quark and antiquark inside a
heavy quarkonium system on IR renormalons contained in the perturbative
computations of the quarkonium energy levels. We demonstrate that, when the
off-shellness p_Q^2 -m_Q^2 \sim alpha_S^2 m_Q^2 is larger than m_Q Lambda_QCD,
renormalons in the energy levels as calculated in perturbative QCD are
suppressed by a factor Lambda_QCD/alpha_S^2 m_Q as compared to those in 2
m_pole + V_QCD(r). In this case the residual O(Lambda_QCD^4) renormalon has the
same dimension as that of the leading gluon-condensate contribution.

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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th