Measurement of the t-channel single-top-quark production cross section and of the |V_tb| CKM matrix element in pp collisions at √s = 8 TeV

dc.contributor.authorCMS Collaboration
dc.contributor.authorCharaf, O.
dc.contributor.authorCooper, S.I.
dc.contributor.authorHenderson, C.
dc.contributor.authorRumerio, P.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2022-08-02T15:12:01Z
dc.date.available2022-08-02T15:12:01Z
dc.date.issued2014
dc.description.abstractMeasurements are presented of the t -channel single-top-quark production cross section in proton-proton collisions at \(\sqrt{s}\) = 8 TeV. The results are based on a data sample corresponding to an integrated luminosity of 19.7 fb⁻¹ recorded with the CMS detector at the LHC. The cross section is measured inclusively, as well as separately for top (t) and antitop \(\left(\overline{\mathrm{t}}\right)\), in final states with a muon or an electron. The measured inclusive t -channel cross section is σ t -ch. = 83. 6 ± 2. 3 (stat.) ± 7. 4 (syst.) pb. The single t and \(\overline{\mathrm{t}}\) cross sections are measured to be σ t -ch. ( t ) = 53. 8 ± 1. 5 (stat.) ± 4. 4 (syst.) pb and σ t -ch. \( \left(\overline{t}\right) \) = 27. 6 ± 1. 3 (stat.) ± 3. 7 (syst.) pb, respectively. The measured ratio of cross sections is R t -ch. = σ t -ch. (t) /σ t -ch. \( \left(\overline{\mathrm{t}}\right) \) = 1. 95 ± 0. 10 (stat.) ± 0. 19 (syst.), in agreement with the standard model prediction. The modulus of the Cabibbo-Kobayashi-Maskawa matrix element V tb is extracted and, in combination with a previous CMS result at \(\sqrt{s}\) = 7 TeV, a value | V tb | = 0. 998 ± 0. 038 (exp.) ± 0. 016 (theo.) is obtained.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationKhachatryan, 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., … Woods, N. (2014). Measurement of the t-channel single-top-quark production cross section and of the |V tb| CKM matrix element in pp collisions at $\sqrt{s}$ = 8 TeV. In Journal of High Energy Physics (Vol. 2014, Issue 6). Springer Science and Business Media LLC. https://doi.org/10.1007/jhep06(2014)090
dc.identifier.doi10.1007/JHEP06(2014)090
dc.identifier.urihttps://ir.ua.edu/handle/123456789/8766
dc.languageEnglish
dc.language.isoen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectHigh Energy Physics - Experiment
dc.subjectHadron-Hadron Scattering
dc.subjectTop physics
dc.titleMeasurement of the t-channel single-top-quark production cross section and of the |V_tb| CKM matrix element in pp collisions at √s = 8 TeVen_US
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