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Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower

Höche, Stefan; Krauss, Frank; Maierhöfer, Philipp; Pozzorini, Stefano; Schönherr, Marek; Siegert, Frank

Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower Thumbnail


Authors

Stefan Höche

Philipp Maierhöfer

Stefano Pozzorini

Frank Siegert



Abstract

We present differential cross sections for the production of top-quark pairs in conjunction with up to two jets, computed at next-to-leading order in perturbative QCD and consistently merged with a parton shower in the Sherpa+OpenLoops framework. Top quark decays including spin correlation effects are taken into account at leading order accuracy. The calculation yields a unified description of top-pair plus multi-jet production, and detailed results are presented for various key observables at the Large Hadron Collider. A large improvement with respect to the multi-jet merging approach at leading order is found for the total transverse energy spectrum, which plays a prominent role in searches for physics beyond the Standard Model.

Citation

Höche, S., Krauss, F., Maierhöfer, P., Pozzorini, S., Schönherr, M., & Siegert, F. (2015). Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower. Physics Letters B, 748, 74-78. https://doi.org/10.1016/j.physletb.2015.06.060

Journal Article Type Article
Acceptance Date Jun 24, 2015
Online Publication Date Jun 26, 2015
Publication Date Sep 2, 2015
Deposit Date Mar 2, 2016
Publicly Available Date Mar 29, 2024
Journal Physics Letters B
Print ISSN 0370-2693
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 748
Pages 74-78
DOI https://doi.org/10.1016/j.physletb.2015.06.060

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