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Transverse-momentum resummation: a perturbative study of Z production at the tevatron. (English) Zbl 1194.81256

Summary: 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.

MSC:

81V05 Strong interaction, including quantum chromodynamics
81V35 Nuclear physics
81T15 Perturbative methods of renormalization applied to problems in quantum field theory
81T80 Simulation and numerical modelling (quantum field theory) (MSC2010)

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References:

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