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Title

Exclusion of an Exotic Top Quark with-4/3 Electric Charge Using Soft Lepton Tagging

AuthorsAaltonen, T.; Cabrera, Susana ; Cuenca Almenar, Cristóbal ; Álvarez González, B.; Casal, Bruno ; Cuevas, Javier ; Gómez, G. ; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío
Issue Date31-Aug-2010
PublisherAmerican Physical Society
CitationPhysical Review Letters 105(10): 101801 (2010)
AbstractWe present a measurement of the electric charge of the top quark using p (p) over bar collisions corresponding to an integrated luminosity of 2: 7 fb(-1) at the CDF II detector. We reconstruct t (t) over bar events in the lepton + jets final state. We use soft lepton taggers to determine the flavor of the b jets, which we use to reconstruct the top quark's electric charge and exclude an exotic top quark with -4/3 charge at 95% confidence level. This is the strongest exclusion of the exotic charge scenario and the first to use soft leptons for this purpose.
Description7 páginas, 2 figuras, 3 tablas.-- CDF Collaboration: et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.105.101801
URIhttp://hdl.handle.net/10261/27842
DOI10.1103/PhysRevLett.105.101801
ISSN0031-9007
Appears in Collections:(IFIC) Artículos
(IFCA) Artículos
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