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Cross section measurement of t-channel single top quark production in pp collisions at √s = 13TeV [in press]

CMS Collaboration; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V.M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; Krätschmer, I.; ... mehr



Abstract (englisch): 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 View the MathML source2.3fb−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 View the MathML source232±13(stat)±28(syst)pb and a ratio of top quark and top antiquark production of View the MathML sourceRt-ch.=1.81±0.18(stat)±0.15(syst). From the total cross section the absolute value of the CKM matrix element VtbVtb is calculated to be View the MathML source1.03±0.07(exp)±0.02(theo). All results are in agreement with the standard model predictions.


Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1016/j.physletb.2017.01.051
ISSN: 0370-2693, 1873-2445
KITopen ID: 1000065738
Erschienen in Physics letters / B
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Schlagworte CMS; physics; top quark
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