Journal article

Pinning down the large-x gluon with NNLO top-quark pair differential distributions

Abstract:: Top-quark pair production at the LHC is directly sensitive to the gluon PDF at large x. While total cross-section data is already included in several PDF determinations, differential distributions are not, because the corresponding NNLO calculations have become available only recently. In this work we study the impact on the large-x gluon of top-quark pair differential distributions measured by ATLAS and CMS at √ s = 8 TeV. Our analysis, performed in the NNPDF3.0 framework at NNLO accuracy, allows us to identify the optimal combination of LHC top-quark pair measurements that maximize the constraints on the gluon, as well as to assess the compatibility between ATLAS and CMS data. We find that differential distributions from topquark pair production provide significant constraints on the large-x gluon, comparable to those obtained from inclusive jet production data, and thus should become an important ingredient for the next generation of global PDF fits.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Czakon, M., Hartland, N., Mitov, A., Nocera, E., & Rojo, J. (2017). Pinning down the large-x gluon with NNLO top-quark pair differential distributions. Journal of High Energy Physics, 2017(44).

MLA Style

Czakon, M, et al. “Pinning down the Large-x Gluon with NNLO Top-Quark Pair Differential Distributions.” Journal of High Energy Physics, vol. 2017, no. 44, 2017.

Chicago Style

Czakon, M, N Hartland, A Mitov, E Nocera, and J Rojo. 2017. “Pinning down the Large-x Gluon with NNLO Top-Quark Pair Differential Distributions.” Journal of High Energy Physics 2017 (44).
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Files:: Czakon_et_al_2017.pdf

(Preview, Version of record, pdf, 1.3MB, Terms of use)

Publisher copy:: 10.1007/JHEP04(2017)044

Authors

+ Czakon, M More by this author

Role:: Author

+ Hartland, N More by this author

Role:: Author

+ Mitov, A More by this author

Role:: Author

+ Nocera, E More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Role:: Author

+ Rojo, J More by this author

Role:: Author

+ Science and Technology Facilities Council More from this funder

Grant:: ST/L002760/1; ST/K004883/1; ST/M003787/1

+ European Research Council More from this funder

Grant:: “PDF4BSM”; “NNLOforLHC2”

Publisher:: Springer Verlag
Journal:: Journal of High Energy Physics More from this journal
Volume:: 2017
Issue:: 44
Publication date:: 2017-04-10
Acceptance date:: 2017-03-27
DOI:: 10.1007/JHEP04(2017)044
EISSN:: 1029-8479

Keywords:: Article
Pubs id:: pubs:687525
UUID:: uuid:d623771f-34ac-4711-b3bf-8105787eca94
Local pid:: pubs:687525
Source identifiers:: 687525
Deposit date:: 2017-03-30
ARK identifier:: ark:/29072/ora_d623771f34ac4711b3bf8105787eca94

Terms of use

Copyright date:: 2017
Notes:: © The Author(s) 2017. JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0.

Licence:: CC Attribution (CC BY)

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