@article{10902/1942,
year = {2011},
month = {4},
url = {http://hdl.handle.net/10902/1942},
abstract = {We report the most sensitive direct search for pair production of fourth-generation bottomlike chiral quarks (b′) each decaying promptly to tW. We search for an excess of events with an electron or muon, at least five jets (one identified as due to a b or 
c quark), and an imbalance of transverse momentum by using data from p¯p collisions collected by the CDF II detector at Fermilab with an integrated luminosity of 4.8 fb−1. We observe events consistent with background expectation, calculate upper limits on the b′ pair-production cross section (σb¯ b′≲30fb for mb′>375 GeV/c2), and exclude mb′<372 GeV/c2 at 95% confidence level assuming a 100% branching ratio of b′ to tW.
.},
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, United Kingdom; 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, 2011, 106(14), 141803},
title = {Search for heavy bottomlike quarks decaying to an electron or muon and jets in pp̅ collisions at √s=1.96  TeV},
author = {Aaltonen, Timo Antero and Álvarez González, Bárbara and Álvarez González, Bárbara and Casal Laraña, Bruno and Cuevas Maestro, Francisco Javier and Gómez Gramuglio, Gervasio and Palencia Cortezón, José Enrique and Rodrigo Anoro, Teresa and Ruiz Jimeno, Alberto and Scodellaro, Luca and Vila Álvarez, Iván  and Vilar Cortabitarte, Rocío and Vizán García, Jesús Manuel},
}