Diphoton signals in theories with large extra dimensions to NLO QCD at hadron colliders

Abstract

We present a full next-to-leading order (NLO) QCD corrections to diphoton production at the hadron colliders in both standard model and ADD model. The invariant mass and rapidity distributions of the diphotons are obtained using a semi-analytical two cut-off phase space slicing method which allows for a successful numerical implementation of various kinematical cuts used in the experiments. The fragmentation photons are systematically removed using smooth-cone-isolation cuts on the photons. The NLO QCD corrections not only stabilise the perturbative predictions but also enhance the production cross section significantly.

13 pages, 5 figures. To appear in PLB

References in corpus (4)

• Gluon-gluon contributions to the production of continuum diphoton pairs at hadron colliders
• Calculation of prompt diphoton production cross sections at Tevatron and LHC energies
• PDF and scale uncertainties of various DY distributions in ADD and RS models at hadron colliders
• Search for Large extra spatial dimensions in the dielectron and diphoton channels in $\mathbf{p}\bar{\mathbf{p}}$ collisions at $\sqrt{\mathbf{s}}=$1.96 TeV

Cited by in corpus (5)

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• Search for Randall-Sundrum Gravitons in the Diphoton Channel at CDF
• Graviton plus vector boson production to NLO in QCD at the LHC
• NLO QCD Corrections to Graviton Induced Deep Inelastic Scattering