@article{10902/1861,
year = {2010},
month = {8},
url = {http://hdl.handle.net/10902/1861},
abstract = {We present a measurement of the electric charge of the top quark using pp̅ collisions corresponding to an integrated luminosity of 2.7  fb-1 at the CDF II detector. We reconstruct tt̅ 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.},
organization = {We thank the Fermilab staff and the technical staffs of
the participating institutions for their vital contributions.
This work was supported by the U.S. Department of
Energy and National Science Foundation; the Italian
Istituto Nazionale di Fisica Nucleare; the Ministry of
Education, Culture, Sports, Science and Technology of
Japan; the Natural Sciences and Engineering Research
Council of Canada; the National Science Council of
the Republic of China; the Swiss National Science
Foundation; the A. P. Sloan Foundation; the
Bundesministerium für Bildung und Forschung,
Germany; the World Class University Program, the
National Research Foundation of Korea; the Science and
Technology Facilities Council and the Royal Society, U.K.;
the Institut National de Physique Nucleaire et Physique des
Particules/CNRS; the Russian Foundation for Basic
Research; the Ministerio de Ciencia e Innovación, and
Programa Consolider-Ingenio 2010, Spain; the Slovak
R&D Agency; and the Academy of Finland.},
publisher = {American Physical Society},
publisher = {Physical Review Letters, 2010, 105(10), 101801},
title = {Exclusion of an exotic top quark with -4/3 electric charge using soft lepton tagging},
author = {Aaltonen, Timo Antero and Álvarez González, Bárbara and Casal Laraña, Bruno and Cuevas Maestro, Francisco Javier and Gómez Gramuglio, Gervasio and Rodrigo Anoro, Teresa and Ruiz Jimeno, Alberto and Scodellaro, Luca and Vila Álvarez, Iván  and Vilar Cortabitarte, Rocío},
}