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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
Url de la publicación: https://doi.org/10.1103/PhysRevLett.113.261804
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Repositorio UCrea Leer publicación
AALTONEN, TIMO ANTERO
BRUNO CASAL LARAÑA
FRANCISCO JAVIER CUEVAS MAESTRO
GERVASIO GOMEZ GRAMUGLIO
JOSE ENRIQUE PALENCIA CORTEZON
ALBERTO RUIZ JIMENO
LUCA SCODELLARO
ROCIO VILAR CORTABITARTE
JESUS MANUEL VIZAN GARCIA
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