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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 | Bean, Alice | |
dc.date.accessioned | 2015-12-21T17:46:34Z | |
dc.date.available | 2015-12-21T17:46:34Z | |
dc.date.issued | 2014-06 | |
dc.identifier.citation | The CMS collaboration. "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." Journal of High Energy Physics. June, 2014, v5n6. http://dx.doi.org/10.1007/JHEP06(2014)090 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/19303 | |
dc.description | This is the published version. | en_US |
dc.description.abstract | Measurements are presented of the t-channel single-top-quark production cross section in proton-proton collisions at 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 (t¯), 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 t¯ cross sections are measured to be σ t-ch.(t) = 53.8 ± 1.5 (stat.) ± 4.4 (syst.) pb and σ t-ch. (t¯) = 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. (t¯) = 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 s√ = 7 TeV, a value |V tb| = 0.998 ± 0.038 (exp.) ± 0.016 (theo.) is obtained. | en_US |
dc.publisher | Springer Verlag | en_US |
dc.subject | Hadron-Hadron Scattering | en_US |
dc.subject | Top physics | en_US |
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 | Article | |
kusw.kuauthor | Bean, Alice | |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1007/JHEP06(2014)090 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |