J.M. Campbell
Predictions for diphoton production at the LHC through NNLO in QCD
Campbell, J.M.; Ellis, R.K.; Li, Y.; Williams, C.
Abstract
In this paper we present a next-to-next-to-leading order (NNLO) calculation of the process pp → γγ that we have implemented into the parton level Monte Carlo code MCFM. We do not find agreement with the previous calculation of this process in the literature. In addition to the O(α2s)O(αs2) corrections present at NNLO, we include some effects arising at O(α3s)O(αs3) , namely those associated with gluon-initiated closed fermion loops. We investigate the role of this process in the context of studies of QCD at colliders and as a background for searches for new physics, paying particular attention to the diphoton invariant mass spectrum. We demonstrate that the NNLO QCD prediction for the shape of this spectrum agrees well with functional forms used in recent data-driven fits.
Citation
Campbell, J., Ellis, R., Li, Y., & Williams, C. (2016). Predictions for diphoton production at the LHC through NNLO in QCD. Journal of High Energy Physics, 2016(7), Article 148. https://doi.org/10.1007/jhep07%282016%29148
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 21, 2016 |
Online Publication Date | Jul 29, 2016 |
Publication Date | Jul 29, 2016 |
Deposit Date | Nov 7, 2016 |
Publicly Available Date | Nov 14, 2016 |
Journal | Journal of High Energy Physics |
Print ISSN | 1126-6708 |
Electronic ISSN | 1029-8479 |
Publisher | Scuola Internazionale Superiore di Studi Avanzati (SISSA) |
Peer Reviewed | Peer Reviewed |
Volume | 2016 |
Issue | 7 |
Article Number | 148 |
DOI | https://doi.org/10.1007/jhep07%282016%29148 |
Public URL | https://durham-repository.worktribe.com/output/1371007 |
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Copyright Statement
© The Author(s) 2016 Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
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