We consider transverse-momentum (q(T)) resummation for Drell-Yan lepton pair production in hadron collisions. At small values of q(T), the logarithmically-enhanced QCD contributions are resummed up to next-to-leading logarithmic accuracy. At intermediate and large values of q(T), resummation is consistently combined with the fixed-order perturbative result. We present numerical results for e(+)e(-) pairs from the decay of Z bosons produced at Tevatron energies. We perform a detailed study of the scale dependence of the results to estimate the corresponding perturbative uncertainty. We comment on the comparison with the available Tevatron data
Transverse-momentum resummation: A perturbative study of Z production at the Tevatron
BOZZI, GIUSEPPE;
2009-01-01
Abstract
We consider transverse-momentum (q(T)) resummation for Drell-Yan lepton pair production in hadron collisions. At small values of q(T), the logarithmically-enhanced QCD contributions are resummed up to next-to-leading logarithmic accuracy. At intermediate and large values of q(T), resummation is consistently combined with the fixed-order perturbative result. We present numerical results for e(+)e(-) pairs from the decay of Z bosons produced at Tevatron energies. We perform a detailed study of the scale dependence of the results to estimate the corresponding perturbative uncertainty. We comment on the comparison with the available Tevatron data
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