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  Photon pair production in gluon fusion: Top quark effects at NLO with threshold matching

Chen, L., Heinrich, G., Jahn, S., Jones, S. P., Kerner, M., Schlenk, J., et al. (2020). Photon pair production in gluon fusion: Top quark effects at NLO with threshold matching. Journal of High Energy Physics, 04, 115. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2019-236.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0008-1BEB-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0008-1BEC-1
Genre: Journal Article

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 Creators:
Chen, Long1, Author
Heinrich, Gudrun1, Author
Jahn, Stephan1, Author
Jones, Stephen P.1, Author
Kerner, Matthias1, Author
Schlenk, Johannes1, Author
Yokoya, Hiroshi1, Author
Affiliations:
1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650              

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Free keywords: Phenomenology of High Energy Physics
 Abstract: We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops, where the two-loop integrals are calculated numerically. Matching the fixed-order NLO results to a threshold expansion, we obtain accurate results around the top quark pair production threshold. We analyse how the top quark threshold corrections affect distributions of the photon pair invariant mass and comment on the possibility of determining the top quark mass from precision measurements of the diphoton invariant mass spectrum.

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 Dates: 2020
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: MPP-2019-236
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2019-236
arXiv: arxiv:1911.09314
URI: https://inspirehep.net/search?p=find+eprint+1911.09314
 Degree: -

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Title: Journal of High Energy Physics
  Abbreviation : JHEP
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 04 Sequence Number: - Start / End Page: 115 Identifier: -