Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-12-15
Nucl.Phys.B815:174-197,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, 12 ps figures, added comments and references; results unchanged
Scientific paper
10.1016/j.nuclphysb.2009.02.014
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.
Bozzi Giuseppe
Catani Stefano
de Florian Daniel
Ferrera Giancarlo
Grazzini Massimiliano
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