We report a measurement of single top quark production in proton-antiproton collisions at a center-of-mass energy of s=1.96 TeV using a data set corresponding to 7.5 fb-1 of integrated luminosity collected by the Collider Detector at Fermilab. We select events consistent with the single top quark decay process t→Wb→νb by requiring the presence of an electron or muon, a large imbalance of transverse momentum indicating the presence of a neutrino, and two or three jets including at least one originating from a bottom quark. An artificial neural network is used to discriminate the signal from backgrounds. We measure a single top quark production cross section of 3.04-0.53+0.57 pb and set a lower limit on the magnitude of the coupling between the top quark and bottom quark |Vtb|>0.78 at the 95% credibility level.
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Titolo: | Measurement of the single top quark production cross section and |Vtb | in events with one charged Lepton, large missing transverse energy, and jets at CDF |
Autori: | |
Data di pubblicazione: | 2014 |
Rivista: | |
Handle: | http://hdl.handle.net/11567/1008493 |
Appare nelle tipologie: | 01.01 - Articolo su rivista |