Search for top-quark partners with charge 5/3 in the same-sign dilepton final state
Physical Review Letters, vol.112, no.17, 2014 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 112 Issue: 17
- Publication Date: 2014
- Doi Number: 10.1103/physrevlett.112.171801
- Journal Name: Physical Review Letters
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Yıldız Technical University Affiliated: Yes
Abstract
A search for the production of heavy partners of the top quark with charge 5/3 is performed in events with a pair of same-sign leptons. The data sample corresponds to an integrated luminosity of 19.5fb-1 and was collected at s=8TeV by the CMS experiment. No significant excess is observed in the data above the expected background, and the existence of top-quark partners with masses below 800 GeV is excluded at a 95% confidence level, assuming they decay exclusively to tW. This is the first limit on these particles from the LHC, and it is significantly more restrictive than previous limits. © 2014 CERN, for the CMS Collaboration.