Measurement of forward top pair production in the dilepton channel in pp collisions at √s=13 TeV

The Lhcb Collaboration

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Forward top quark pair production is studied in pp collisions in the μeb final state using a data sample corresponding to an integrated luminosity of 1.93 fb−1 collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The cross-section is measured in a fiducial region where both leptons have a transverse momentum greater than 20 GeV and a pseudorapidity between 2.0 and 4.5. The quadrature sum of the azimuthal separation and the difference in pseudorapidities, denoted ΔR, between the two leptons must be larger than 0.1. The b-jet axis is required to be separated from both leptons by a ΔR of 0.5, and to have a transverse momentum in excess of 20 GeV and a pseudorapidity between 2.2 and 4.2. The cross-section is measured to beσtt¯=126±19(stat)±16(syst)±5(lumi)fbwhere the first uncertainty is statistical, the second is systematic, and the third is due to the luminosity determination. The measurement is compatible with the Standard Model prediction.[Figure not available: see fulltext.].

Original languageEnglish
Article number174
Pages (from-to)1-18
Number of pages19
JournalJournal of High Energy Physics
Volume2018
Issue number8
Early online date28 Aug 2018
DOIs
Publication statusPublished - Aug 2018

Funding

Open Access, Copyright CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3.

FundersFunder number
Not addedST/J004332/1, ST/N000250/1, 1681016, ST/K003410/1, 1796908, ST/N000234/1, ST/N000463/1, ST/N000455/1, ST/L003163/1, ST/N000242/1
AvH Foundation
CNRS/IN2P3
EPLANET
FASO
Herchel Smith Fund
MinES
OCEVU
Yandex LLC
National Science Foundation
School of Energy Resources, University of Wyoming
H2020 Marie Skłodowska-Curie Actions
CERN
Science and Technology Facilities CouncilST/N000447/1, LHCb, LHCb Upgrades
Leverhulme Trust
Royal Society
English-Speaking Union
European Commission
European Research Council
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung166208
National Natural Science Foundation of China
Russian Foundation for Basic Research
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Bundesministerium für Bildung und Forschung
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Generalitat Valenciana
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science and Technology
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Ministerstwo Nauki i Szkolnictwa Wyższego
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
National Academy of Sciences of Ukraine
Financiadora de Estudos e Projetos
Russian Science Foundation
Région Auvergne-Rhône-Alpes

    Keywords

    • Hadron-Hadron scattering (experiments)
    • Heavy quark production
    • Jet physics
    • QCD
    • Top physics

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