Measurement of the T-channel Single-top-quark Production Cross Section and of the $\mid V_{tb} \mid$ CKM Matrix Element in Pp Collisions at $\sqrt{s}$
Title | Measurement of the T-channel Single-top-quark Production Cross Section and of the $\mid V_{tb} \mid$ CKM Matrix Element in Pp Collisions at $\sqrt{s}$ PDF eBook |
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Pages | 43 |
Release | 2014 |
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Measurement of the T-channel Single Top Quark Production Cross Section and the CKM Matrix Element V Tb with the CMS Experiment
Title | Measurement of the T-channel Single Top Quark Production Cross Section and the CKM Matrix Element V Tb with the CMS Experiment PDF eBook |
Author | Dennis Klingebiel |
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Pages | 0 |
Release | 2014 |
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Cross Section Measurement of T-channel Single Top Quark Production in Pp Collisions at $\sqrt{s}
Title | Cross Section Measurement of T-channel Single Top Quark Production in Pp Collisions at $\sqrt{s} PDF eBook |
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Release | 2016 |
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The cross section for the production of single top quarks in the $t$ channel is measured in proton-proton collisions at 13 TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated luminosity of 2.3 fb$^{-1}$. The event selection requires one muon and two jets where one of the jets is identified as originating from a bottom quark. Several kinematic variables are then combined into a multivariate discriminator to distinguish signal from background events. A fit to the distribution of the discriminating variable yields a total cross section of 232 $\pm$ 13 (stat) $\pm$ 28 (syst) pb and a ratio of top quark and top antiquark production of $R_{t\textrm{-ch.}}= $ 1.81 $\pm$ 0.18 (stat) $\pm$ 0.15 (syst). From the total cross section the absolute value of the CKM matrix element $V_{\mathrm{tb}}$ is calculated to be 1.03 $\pm$ 0.07 (exp) $\pm$ 0.02 (theo). All results are in agreement with the standard model predictions.
Measurement of the T-channel Single Top Quark Production Cross Section and the CKM Matrix Element V Tb with the CMS Experiment
Title | Measurement of the T-channel Single Top Quark Production Cross Section and the CKM Matrix Element V Tb with the CMS Experiment PDF eBook |
Author | Dennis Klingebiel |
Publisher | |
Pages | 255 |
Release | 2014 |
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ISBN |
Measurement of the T-channel Single-top-quark Production Cross Section and of the
Title | Measurement of the T-channel Single-top-quark Production Cross Section and of the PDF eBook |
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Pages | 43 |
Release | 2014 |
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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 $ \left(\overline{\mathrm{t}}\right) $, in final states with a muon or an electron. The measured inclusive t-channel cross section is?t-ch. = 83.6 ± 2.3 (stat.) ± 7.4 (syst.) pb. The single t and $ \overline{\mathrm{t}} $ cross sections are measured to be?t-ch.(t) = 53.8 ± 1.5 (stat.) ± 4.4 (syst.) pb and?$_{t-ch.}$ $ \left(\overline{t}\right) $ = 27.6 ± 1.3 (stat.) ± 3.7 (syst.) pb, respectively. The measured ratio of cross sections is Rt-ch. =?t-ch.(t)/?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 Vtb is extracted and, in combination with a previous CMS result at √s = 7 TeV, a value.
Measurement of the T-Channel Single Top Quark Production Cross Section in Pp Collisions at Sqrt[s]
Title | Measurement of the T-Channel Single Top Quark Production Cross Section in Pp Collisions at Sqrt[s] PDF eBook |
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Release | 2011 |
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Electroweak production of the top quark is measured in pp collisions at sqrt(s) = 7 TeV, using a dataset collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 inverse picobarns. With an event selection optimized for t-channel production, two complementary analyses are performed. The first one exploits the special angular properties of the signal, together with background estimates from data. The second approach uses a multivariate analysis technique to probe the compatibility with signal topology expected from electroweak top quark production. The combined measurement of the cross section is 83.6 +/- 29.8 (stat.+syst.) +/- 3.3 (lumi.) pb, consistent with the standard model expectation.
Cross Section Measurement of T-channel Single Top Quark Production in Pp Collisions at √s
Title | Cross Section Measurement of T-channel Single Top Quark Production in Pp Collisions at √s PDF eBook |
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Release | 2016 |
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