The first results on next-to-leading order QCD corrections to production of direct photon pairs in hadronic collisions in the extra dimension models - ADD and RS are presented. Various kinematical distributions are obtained to order αs in QCD by taking into account all the parton level subprocesses. Our Monte Carlo based code incorporates all the experimental cuts suitable for physics studies at the LHC. We estimate the impact of the QCD corrections on various observables and find that they are significant. We also show the reduction in factorization scale uncertainty when O (αs) effects are included. © 2009 Elsevier B.V. All rights reserved.

Anurag Tripathi

Department of Physics

M.C. Kumar

P. Mathews

V. Ravindran

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Indian Institute of Technology Hyderabad (IITH) is a premier institute of science and technology established in 2008. IITH has been consistently ranked in the&nbsp;<a href="https://iith.ac.in/reports/" rel="noopener noreferrer">top 10 institutes</a>&nbsp;in India for Engineering&nbsp;<a href="https://www.nirfindia.org/2021/EngineeringRanking.html" rel="noopener noreferrer" target="_blank">according to NIRF</a>&nbsp;making it one of the most coveted schools for science and technology in the country.

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Journal	Nuclear Physics B
ISSN	05503213