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Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation

Antonio Pineda
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Abstract

In the framework of potential NRQCD, we obtain the next-to-leading-log renormalization-group running of the matching coefficients for the heavy quarkonium production currents near threshold. This allows to obtain S-wave heavy-quarkonium production/annihilation observables with next-to-leading-log accuracy within perturbative QCD. In particular, we give expressions for the decays of heavy quarkonium to e^+e^- and to two photons. We also compute the O(mα^8\ln^3α) corrections to the Hydrogen spectrum.

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Antonio Pineda. 2002-09-18. Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation. https://doi.org/10.1103/physrevd.66.054022

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