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

doi:10.1016/j.physletb.2015.06.060

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

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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. As a result, 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.

Authors:

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

Publication Date:: Tue Sep 01 00:00:00 EDT 2015

Research Org.:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP); Swiss National Science Foundation (SNSF); European Commission (EC)

Contributing Org.:: Open Science Grid; National Science Foundation, Arlington, VA (United States)

OSTI Identifier:: 1209156

Alternate Identifier(s):: OSTI ID: 1134556; OSTI ID: 1204543

Report Number(s):: SLAC-PUB-15911
Journal ID: ISSN 0370-2693; S0370269315004827; PII: S0370269315004827

Grant/Contract Number:: AC02-76SF00515; PP00P2_153027

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 748 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; phenomenology-HEP; HEPPH

Citation Formats


                    Höche, Stefan, Krauss, Frank, Maierhöfer, Philipp, Pozzorini, Stefano, Schönherr, Marek, and Siegert, Frank. Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower.  Netherlands: N. p., 2015. 
Web.  doi:10.1016/j.physletb.2015.06.060.

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                    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.  Netherlands.  https://doi.org/10.1016/j.physletb.2015.06.060

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                    Höche, Stefan, Krauss, Frank, Maierhöfer, Philipp, Pozzorini, Stefano, Schönherr, Marek, and Siegert, Frank. Tue .  
"Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower".  Netherlands.  https://doi.org/10.1016/j.physletb.2015.06.060.

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@article{osti_1209156,

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

  author       = {Höche, Stefan and Krauss, Frank and Maierhöfer, Philipp and Pozzorini, Stefano and Schönherr, Marek and Siegert, Frank},

  abstractNote = {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. As a result, 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.},

  doi          = {10.1016/j.physletb.2015.06.060},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 748,

  place        = {Netherlands},

  year         = {Tue Sep 01 00:00:00 EDT 2015},

  month        = {Tue Sep 01 00:00:00 EDT 2015}

}

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