Production of Drell-Yan lepton pairs in hadron collisions: Transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy

被引：142
作者：
Bozzi, Giuseppe [3 ,4 ]
Catani, Stefano [1 ,2 ]
Ferrera, Giancarlo [1 ,2 ]
de Florian, Daniel [5 ]
Grazzini, Massimiliano [1 ,2 ]
机构：
[1] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Florence, Italy
[2] Univ Florence, Dipartimento Fis & Astron, I-50019 Florence, Italy
[3] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[4] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy
[5] Univ Buenos Aires, Dept Fis, FCEYN, Buenos Aires, Argentina
来源：
PHYSICS LETTERS B | 2011年 / 696卷 / 03期
关键词：
QCD; hadron colliders; Transverse-momentum resummation; Drell-Van process; BOSON PRODUCTION; RADIATIVE-CORRECTIONS; HIGGS-BOSON; BACK JETS; ORDER; LHC;
D O I：
10.1016/j.physletb.2010.12.024
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider the transverse-momentum (q(T)) distribution of Drell-Yan lepton pairs produced in hadron collisions. At small values of q(T), we resum the logarithmically-enhanced perturbative QCD contributions up to next-to-next-to-leading logarithmic accuracy. At intermediate and large values of q(T), we consistently combine resummation with the known next-to-leading order alpha(2)(s) perturbative result. All perturbative terms up to order ai are included in our computation which, after integration over q(T), reproduces the known next-to-next-to-leading order result for the Drell-Van 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. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：207 / 213
页数：7
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