Threshold resummation of the rapidity distribution for Drell-Yan production at NNLO plus NNLL

被引:31
作者
Banerjee, Pulak [1 ,2 ]
Das, Goutam [3 ]
Dhani, Prasanna K. [1 ,2 ]
Ravindran, V. [1 ,2 ]
机构
[1] Inst Math Sci, Madras 600113, Tamil Nadu, India
[2] Homi Bhabha Natl Inst, Training Sch Complex, Bombay 400085, Maharashtra, India
[3] DESY, Theory Grp, Notkestr 85, D-22607 Hamburg, Germany
关键词
LARGE TRANSVERSE-MOMENTUM; LEPTON-PAIR PRODUCTION; FORM-FACTOR; QCD; BOSON; ANNIHILATION; SUDAKOV; LHC;
D O I
10.1103/PhysRevD.98.054018
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider the production of pairs of lepton through the Drell-Yan process at the LHC and present the most accurate prediction on their rapidity distribution. While the fixed order prediction is already known to next-to-next-to-leading order in perturbative QCD, the resummed contribution coming from threshold region of phase space up to next-to-next-to-leading logarithmic (NNLL) accuracy has been computed in this article. The formalism developed in [1-3] has been used to resum large threshold logarithms in the two dimensional Mellin space to all orders in perturbation theory. We have done a detailed numerical comparison against other approaches that resum certain threshold logarithms in Mellin-Fourier space. Our predictions at NNLL level are close to theirs even though at leading logarithmic and next-to-leading logarithmic level we differ. We have also investigated the impact of these threshold logarithms on the stability of perturbation theory against factorization and renormalization scales. While the dependence on these scales does not get better with resummed results, the convergence of the perturbative series shows a better trend compared to the fixed order predictions. This is evident from the reduction in the K-factor for the resummed case compared to fixed order. We also present the uncertainties on the predictions resulting from parton distribution functions.
引用
收藏
页数:13
相关论文
共 81 条
[1]   Measurement of dσ/dy of Drell-Yan e+e- pairs in the Z mass region from p(p)over-bar collisions at √s=1.96 TeV [J].
Aaltonen, T. ;
Adelman, J. ;
Alvarez Gonzalez, B. ;
Amerio, S. ;
Amidei, D. ;
Anastassov, A. ;
Annovi, A. ;
Antos, J. ;
Apollinari, G. ;
Appel, J. ;
Apresyan, A. ;
Arisawa, T. ;
Artikov, A. ;
Asaadi, J. ;
Ashmanskas, W. ;
Attal, A. ;
Aurisano, A. ;
Azfar, F. ;
Badgett, W. ;
Barbaro-Galtieriai, A. ;
Barnes, V. E. ;
Barnett, B. A. ;
Barria, P. ;
Bartos, R. ;
Bauer, G. ;
Beauchemin, P. -H. ;
Bedeschi, F. ;
Beecher, D. ;
Behari, S. ;
Bellettini, G. ;
Bellinger, J. ;
Benjamin, D. ;
Beretvas, A. ;
Bhatti, A. ;
Binkley, M. ;
Bisello, D. ;
Bizjak, I. ;
Blair, R. E. ;
Blocker, C. ;
Blumenfeld, B. ;
Bocci, A. ;
Bodek, A. ;
Boisvert, V. ;
Bortoletto, D. ;
Boudreau, J. ;
Boveia, A. ;
Brau, B. ;
Bridgeman, A. ;
Brigliadori, L. ;
Bromberg, C. .
PHYSICS LETTERS B, 2010, 692 (04) :232-239
[2]   A critical appraisal and evaluation of modern PDFs [J].
Accardi, A. ;
Alekhin, S. ;
Blumlein, J. ;
Garzelli, M. V. ;
Lipka, K. ;
Melnitchouk, W. ;
Moch, S. ;
Owens, J. F. ;
Placakyte, R. ;
Reya, E. ;
Sato, N. ;
Vogt, A. ;
Zenaiev, O. .
EUROPEAN PHYSICAL JOURNAL C, 2016, 76 (08)
[3]  
Affolder T., 2001, Physical Review D, V63, p011101/1, DOI 10.1103/PhysRevD.63.011101
[4]  
Ahmed T, 2015, J HIGH ENERGY PHYS, DOI 10.1007/JHEP02(2015)131
[5]   Rapidity Distributions in Drell-Yan and Higgs Productions at Threshold to Third Order in QCD [J].
Ahmed, Taushif ;
Mandal, M. K. ;
Rana, Narayan ;
Ravindran, V. .
PHYSICAL REVIEW LETTERS, 2014, 113 (21)
[6]   Drell-Yan Production at Threshold to Third Order in QCD [J].
Ahmed, Taushif ;
Mahakhud, Maguni ;
Rana, Narayan ;
Ravindran, V. .
PHYSICAL REVIEW LETTERS, 2014, 113 (11)
[7]   Parton distribution functions, αs, and heavy-quark masses for LHC Run II [J].
Alekhin, S. ;
Bluemlein, J. ;
Moch, S. ;
Placakyte, R. .
PHYSICAL REVIEW D, 2017, 96 (01)
[8]  
Alioli S, 2017, EUR PHYS J C, V77, DOI 10.1140/epjc/s10052-017-4832-7
[9]   LARGE PERTURBATIVE CORRECTIONS TO THE DRELL-YAN PROCESS IN QCD [J].
ALTARELLI, G ;
ELLIS, RK ;
MARTINELLI, G .
NUCLEAR PHYSICS B, 1979, 157 (03) :461-497
[10]   LEPTOPRODUCTION AND DRELL-YAN PROCESSES BEYOND LEADING APPROXIMATION IN CHROMODYNAMICS [J].
ALTARELLI, G ;
ELLIS, RK ;
MARTINELLI, G .
NUCLEAR PHYSICS B, 1978, 143 (03) :521-545