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Pregled bibliografske jedinice broj: 875662

Measurement of the t-tbar production cross section in the e- mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV


Khachatryan, Vardan; ...; Pleština, R.; ...; Godinović, Nikola; Lelas, Damir; Puljak, Ivica; ...; Antunović, Željko; Kovač, Marko et al.
Measurement of the t-tbar production cross section in the e- mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV // Journal of High Energy Physics, (2016), 29-1 doi:10.1007/JHEP08(2016)029 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 875662 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Measurement of the t-tbar production cross section in the e- mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV

Autori
Khachatryan, Vardan ; ... ; Pleština, R. ; ... ; Godinović, Nikola ; Lelas, Damir ; Puljak, Ivica ; ... ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Kadija, Krešo ; Luetić, Jelena ; Mićanović, Saša ; Sudić, Lucija ; ... ; Morović, Srećko ; ... ; Ferenček, Dinko ; ... ; Đurić, Senka ; ... ; Woods, Nate

Izvornik
Journal of High Energy Physics (1029-8479) (2016); 29-1

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

Ključne riječi
High energy physics, Experimental particle physics, LHC, CMS, Standard Model

Sažetak
The inclusive cross section for top quark pair production is measured in proton-proton collisions at sqrt(s) = 7 and 8 TeV, corresponding to 5.0 and 19.7 invers-femtobarns, respectively, with the CMS experiment at the LHC. The cross sections are measured in the electron-muon channel using a binned likelihood fit to multi-differential final state distributions related to identified b quark jets and other jets in the event. The measured cross section values are 173.6 +/- 2.1 (stat) +4.5-4.0 (syst) +/- 3.8 (lumi) pb at sqrt(s) = 7 TeV, and 244.9 +/- 1.4 (stat) +6.3-5.5 (syst) +/- 6.4 (lumi) pb at sqrt(s) = 8 TeV, in good agreement with QCD calculations at next-to-next-to-leading-order accuracy. The ratio of the cross sections measured at 7 and 8 TeV is determined, as well as cross sections in the fiducial regions defined by the acceptance requirements on the two charged leptons in the final state. The cross section results are used to determine the top quark pole mass via the dependence of the theoretically predicted cross section on the mass, giving a best result of 173.8 +1.7-1.8 GeV. The data at sqrt(s) = 8 TeV are also used to set limits, for two neutralino mass values, on the pair production of supersymmetric top squarks with masses close to the top quark mass.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
HRZZ-09.01/346 - Potraga za novim standardnim modelom elementarnih čestica na LHC-u: od preciznih mjerenja elektroslabih procesa do direktnih potraga za novom fizikom (Vuko Brigljević, )
HRZZ-7118

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

Citiraj ovu publikaciju

Khachatryan, Vardan; ...; Pleština, R.; ...; Godinović, Nikola; Lelas, Damir; Puljak, Ivica; ...; Antunović, Željko; Kovač, Marko et al.
Measurement of the t-tbar production cross section in the e- mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV // Journal of High Energy Physics, (2016), 29-1 doi:10.1007/JHEP08(2016)029 (međunarodna recenzija, članak, znanstveni)
Khachatryan, V., ..., Pleština, R., ..., Godinović, N., Lelas, D., Puljak, I., ..., Antunović, Ž. & Kovač, M. (2016) Measurement of the t-tbar production cross section in the e- mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV. Journal of High Energy Physics,, 29-1 doi:10.1007/JHEP08(2016)029.
@article{article, year = {2016}, pages = {29-1-29-}, DOI = {10.1007/JHEP08(2016)029}, keywords = {High energy physics, Experimental particle physics, LHC, CMS, Standard Model}, journal = {Journal of High Energy Physics}, doi = {10.1007/JHEP08(2016)029}, issn = {1029-8479}, title = {Measurement of the t-tbar production cross section in the e- mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV}, keyword = {High energy physics, Experimental particle physics, LHC, CMS, Standard Model} }

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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