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Pregled bibliografske jedinice broj: 1042663

Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at s√ = 13 TeV


(CMS Collaboration) Sirunyan, Albert M; ...; Antunović, Željko; Brigljević, Vuko; Ceci, Saša; Ferenček, Dinko; Giljanović, Duje; Godinović, Nikola; Kadija, Krešo; Kovač, Marko et al.
Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at s√ = 13 TeV // The Journal of high energy physics, 11 (2019), 082, 49 doi:10.1007/JHEP11(2019)082 (međunarodna recenzija, članak, znanstveni)


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Naslov
Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at s√ = 13 TeV

Autori
Sirunyan, Albert M ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ceci, Saša ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kadija, Krešo ; Kovač, Marko ; Lelas, Damir ; Luetić, Jelena ; Mesić, Benjamin ; Puljak, Ivica ; Roguljić, Matej ; Starodumov, Andrey ; Đurić, Senka ; Šuša, Tatjana ; Šćulac, Toni ; ... ; Woods, Nathaniel

Kolaboracija
CMS Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 11 (2019); 082, 49

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
High energy physics ; Experimental particle physics ; LHC ; CMS ; Particle Physics Experiments ; Hadron-Hadron scattering (experiments) ; Supersymmetry ; Higgs physics ; Beyond Standard Model ; Photon production ; Elementary Particles and Fields ; B physics ; Exotica ; Long-lived particles ; Top physics

Sažetak
A search for the standard model production of four top quarks (pp → tt¯tt¯) is reported using single-lepton plus jets and opposite-sign dilepton plus jets signatures. Proton-proton collisions are recorded with the CMS detector at the LHC at a center-of-mass energy of 13 TeV in a sample corresponding to an integrated luminosity of 35.8 fb−1. A multivariate analysis exploiting global event and jet properties is used to discriminate tt¯tt¯ from tt¯ production. No significant deviation is observed from the predicted background. An upper limit is set on the cross section for tt¯tt¯ production in the standard model of 48 fb at 95% confidence level. When combined with a previous measurement by the CMS experiment from an analysis of other final states, the observed signal significance is 1.4 standard deviations, and the combined cross section measurement is 13+11−9 fb. The result is also interpreted in the framework of effective field theory.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Split

Citiraj ovu publikaciju

(CMS Collaboration) Sirunyan, Albert M; ...; Antunović, Željko; Brigljević, Vuko; Ceci, Saša; Ferenček, Dinko; Giljanović, Duje; Godinović, Nikola; Kadija, Krešo; Kovač, Marko et al.
Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at s√ = 13 TeV // The Journal of high energy physics, 11 (2019), 082, 49 doi:10.1007/JHEP11(2019)082 (međunarodna recenzija, članak, znanstveni)
(CMS Collaboration) (CMS Collaboration) Sirunyan, A., ..., Antunović, Ž., Brigljević, V., Ceci, S., Ferenček, D., Giljanović, D., Godinović, N., Kadija, K. & Kovač, M. (2019) Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at s√ = 13 TeV. The Journal of high energy physics, 11, 082, 49 doi:10.1007/JHEP11(2019)082.
@article{article, year = {2019}, pages = {49}, DOI = {10.1007/JHEP11(2019)082}, chapter = {082}, keywords = {High energy physics, Experimental particle physics, LHC, CMS, Particle Physics Experiments, Hadron-Hadron scattering (experiments), Supersymmetry, Higgs physics, Beyond Standard Model, Photon production, Elementary Particles and Fields, B physics, Exotica, Long-lived particles, Top physics}, journal = {The Journal of high energy physics}, doi = {10.1007/JHEP11(2019)082}, volume = {11}, issn = {1126-6708}, title = {Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at s√ = 13 TeV}, keyword = {High energy physics, Experimental particle physics, LHC, CMS, Particle Physics Experiments, Hadron-Hadron scattering (experiments), Supersymmetry, Higgs physics, Beyond Standard Model, Photon production, Elementary Particles and Fields, B physics, Exotica, Long-lived particles, Top physics}, chapternumber = {082} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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