Eur. Phys. J. C (2007) 49: 599-611
https://doi.org/10.1140/epjc/s10052-006-0054-0

Regular Article - Theoretical Physics

PDF and scale uncertainties of various DY distributions in ADD and RS models at hadron colliders

¹ Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata, 700 064, India
² School of Physics, University of Hyderabad, Hyderabad, 500 046, India
³ Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad, India

^* e-mail: prakash.mathews@saha.ac.in

Received: 13 July 2006
Revised: 19 August 2006
Published online: 24 October 2006

Abstract

In the extra dimension models of ADD and RS we study the dependence of the various parton distribution functions on observables of Drell–Yan processes to NLO in QCD at LHC and Tevatron energies. Uncertainties at LHC due to factorisation scales in going from leading to next-to-leading order in QCD for the various distributions get reduced by about 2.75 times for a μ_F range 0.5Q<μ_F<1.5Q. Further uncertainties arising from the error on the experimental data are estimated using the MRST parton distribution functions.