DE FLORIAN daniel Enrique
Production of Drell-Yan lepton pairs in hadron collisions: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
G.BOZZI, S.CATANI, G.FERRERA, DANIEL DE FLORIAN, M.GRAZZINI
PHYSICS LETTERS B
ELSEVIER SCIENCE BV
Lugar: Amsterdam; Año: 2011 vol. 696 p. 207 - 207
We consider the transverse-momentum (qT ) distribution of DrellYan lepton pairs produced in hadron collisions. At small values of qT , we resum the logarithmically-enhanced perturbative QCD contributions up to next-to-next-to-leading logarithmic accuracy. At intermediate and large values of qT , we consis- tently combine resummation with the known next-to-leading order perturbative result. All perturbative terms up to order αs^2 are included in our computation which, after integration over qT , reproduces the known next-to-next-to-leading order result for the DrellYan total cross section. We show and discuss the reduction in the scale dependence of the results with respect to lower-order calculations, estimating the corresponding perturbative uncertainty. We present a preliminary comparison with Tevatron Run II data.