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

Abstract

In the extra dimension models of ADD and RS we study the dependence of the various parton distribution functions on observable of Drell-Yan process 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 ${\mu }_F$ range $0.5Q<{\mu }_F<1.5Q$. Further uncertainties arising from the error on experimental data are estimated using the MRST parton distribution functions.

27 pages, 11 figures, the version to appear in European Physical Journal C

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