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.author | CMS Collaboration | |
dc.contributor.author | Charaf, O. | |
dc.contributor.author | Cooper, S.I. | |
dc.contributor.author | Henderson, C. | |
dc.contributor.author | Rumerio, P. | |
dc.contributor.other | University of Alabama Tuscaloosa | |
dc.date.accessioned | 2022-08-02T15:12:01Z | |
dc.date.available | 2022-08-02T15:12:01Z | |
dc.date.issued | 2014 | |
dc.description.abstract | Measurements 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.mimetype | application/pdf | |
dc.identifier.citation | 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., … 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.doi | 10.1007/JHEP06(2014)090 | |
dc.identifier.uri | https://ir.ua.edu/handle/123456789/8766 | |
dc.language | English | |
dc.language.iso | en_US | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.subject | High Energy Physics - Experiment | |
dc.subject | Hadron-Hadron Scattering | |
dc.subject | Top physics | |
dc.title | 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 | en_US |
dc.type | text |
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