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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

Abstract: We report a measurement of single top quark production in proton-antiproton collisions at a center-of-mass energy of vs=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?l?b 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+0.57-0.53??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.

 Fuente: Phys. Rev. Lett. Vol. 113, Num. 26, Pag. 261804 (2014)

 Editorial: American Physical Society

 Fecha de publicación: 01/12/2014

 Nº de páginas: 8

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.113.261804

 ISSN: 0031-9007,1079-7114

 Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.113.261804

Autoría

AALTONEN, TIMO ANTERO

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON