Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at
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- 作者：CMS Collaboration ; S. Chatrchyan ; V. Khachatryan ; A.M. Sirunyan ; A. Tumasyan ; W. Adam ; T. Bergauer ; M. Dragicevic ; J. Er? ; C. Fabjan ; M. Friedl ; R. Fr¨¹hwirth ; V.M. Ghete ; J. Hammer ; N. H?rmann ; J. Hrubec ; M. Jeitler ; W. Kiesenhofer ; M. Krammer ; D. Liko ; et al.
- 关键词：CMS ; Physics ; Dilepton ; Top-like ; Tprime ; Fourth generation
- 刊名：Physics Letters B
- 出版年：2012
- 出版时间：17 September, 2012
- 年：2012
- 卷：716
- 期：1
- 页码：103-121
- 全文大小：464 K
文摘
The results of a search for pair production of a heavy, top-like quark, , in the decay mode are presented. The search is performed with a data sample corresponding to an integrated luminosity of 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 production is found. Upper limits on the production cross section as a function of mass are presented, and masses below are excluded at the 95 % confidence level.