Unparticles in diphoton production to NLO in QCD at the LHC

Details Unparticles in diphoton production to NLO in QCD at the LHC Unparticles in diphoton production to NLO in QCD at the LHC

2008-04-25

arxiv.org/abs/0804.4054v2

Phys. Rev. D 79, 075012 (2009)

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 5 figures; replaced with version accepted for publication in PRD

Scientific paper

10.1103/PhysRevD.79.075012

We compute to next-to-leading order in QCD the tensor unparticle contribution to the diphoton production at the LHC, wherein the unparticle sector is a consequence of (a) scale invariance but not full conformal invariance and (b) conformal invariance. We use the semi-analytical two cutoff phase space slicing method to handle the ${\cal O}(\alpha_s)$ corrections to the $p p \to \gamma \gamma X$ and show that our results are insensitive to the soft and collinear cutoffs. In order to avoid the contribution of the photons due to fragmentation, we employ the smooth cone isolation criterion. Significance of the QCD corrections to the diphoton events including unparticles is highlighted.

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