Resummed quarkonium fragmentation functions are derived to all orders in perturbation theory, resolving threshold singularities without nonperturbative model functions.
Aadet al.(ATLAS), Measurement of the production cross-section ofJ/ψandψ(2S) mesons in pp collisions at √s= 13 TeV with the ATLAS detector, Eur
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Resummation of threshold double logarithms in quarkonium fragmentation functions
Resummed quarkonium fragmentation functions are derived to all orders in perturbation theory, resolving threshold singularities without nonperturbative model functions.