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Measurement of the cross section ratio in collisions at σtt¯bb¯/σtt¯jj in pp collisions at s=8 TeV

Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V.M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knünz, V.; Krammer, M.; Krätschmer, I.; Liko, D.; ... mehr

Abstract:
The first measurement of the cross section ratio σ t t ¯ b b ¯ / σ t t ¯ jj is presented using a data sample corresponding to an integrated luminosity of 19.6 fb−1 collected in pp collisions at s = 8   TeV with the \{CMS\} detector at the LHC. Events with two leptons (e or μ) and four reconstructed jets, including two identified as b quark jets, in the final state are selected. The ratio is determined for a minimum jet transverse momentum p T of both 20 and 40 GeV/c. The measured ratio is 0.022 ± 0.003 ( stat ) ± 0.005 ( syst ) for p T > 20   GeV / c . ... mehr

Abstract (englisch):
The first measurement of the cross section ratio σ t t ¯ b b ¯ / σ t t ¯ jj is presented using a data sample corresponding to an integrated luminosity of 19.6 fb−1 collected in pp collisions at s = 8 TeV with the \{CMS\} detector at the LHC. Events with two leptons (e or μ) and four reconstructed jets, including two identified as b quark jets, in the final state are selected. The ratio is determined for a minimum jet transverse momentum p T of both 20 and 40 GeV/c. The measured ratio is 0.022 ± 0.003 ( stat ) ± 0.005 ( syst ) for p T > 20 GeV / c . ... mehr

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Volltext §
DOI: 10.5445/IR/1000047465
Originalveröffentlichung
DOI: 10.1016/j.physletb.2015.04.060
Scopus
Zitationen: 21
Web of Science
Zitationen: 22
Coverbild
Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 0370-2693
urn:nbn:de:swb:90-474657
KITopen-ID: 1000047465
Erschienen in Physics Letters B
Band 746
Heft 0
Seiten 132 - 153
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Nachgewiesen in Scopus
Web of Science
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