Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at √s = 7 TeV

• Main Authors: Bauer, Gerry P. (Contributor), Bendavid, J. (Contributor), Busza, Wit (Contributor), Cali, Ivan Amos (Contributor), Chan, M. (Contributor), Dutta, V. (Contributor), Gomez-Ceballos, Guillelmo (Contributor), Goncharov, Maxim (Contributor), Hahn, Kristian Allan (Contributor), Kim, Y. (Contributor), Klute, Markus (Contributor), Lee, Y.-J (Contributor), Li, W. (Contributor), Luckey, P. David, Jr (Contributor), Teng, Ma (Author), Nahn, Steven (Contributor), Paus, Christoph M. E. (Contributor), Ralph, Duncan Kelley (Contributor), Roland, Christof E. (Contributor), Rudolph, Matthew Scott (Contributor), Stephans, George S. F. (Contributor), Stockli, Fabian (Contributor), Sumorok, Konstanty C. (Contributor), Sung, Kevin Kai Hong (Contributor), Velicanu, Dragos Alexandru (Contributor), Wenger, Edward Allen (Contributor), Wolf, R. (Contributor), Wyslouch, Boleslaw (Contributor), Xie, S. (Contributor), Yang, M. (Contributor), Yilmaz, Yetkin (Contributor), Yoon, A. S. (Contributor), Zanetti, Marco (Contributor), Butz, Erik M. (Contributor), Roland, Gunther M. (Contributor), Ma, Teng (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor), Massachusetts Institute of Technology. School of Science (Contributor)
• Format: Article
• Language: English
• Published: Elsevier, 2014-11-24T18:48:53Z.
• Subjects: Article
• Online Access: Get fulltext

The results of a search for pair production of a heavy, top-like quark, t', in the decay mode t't¯' → bW+b¯W[superscript −] → bℓ+νb¯ℓ[superscript −]ν¯ are presented. The search is performed with a data sample corresponding to an integrated luminosity of 5.0 fb [superscript −1] in pp collisions at a center-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC. The observed number of events agrees with the expectation from standard model processes, and no evidence of t't¯' production is found. Upper limits on the production cross section as a function of t' mass are presented, and t' masses below 557 [GeV over c[superscript 2]] are excluded at the 95% confidence level.
European Organization for Nuclear Research
United States. Dept. of Energy
National Science Foundation (U.S.)