Analysis Centre seminar: Search for heavy partners of the top quark at CMS experiment
by
Sadia Khalil
→
Europe/Berlin
Lecture hall (DESY Hamburg)
Lecture hall
DESY Hamburg
Description
We present results of searches for a new heavy 4th generation and vector-like quark using leptonic, and semileptonic final states comprising of electron(s) and/or muon(s) and jets. The full sample of 5 fb-1 of pp collisions recorded with CMS experiment in 2011 at the center-of-mass energy of 7 TeV has been used. In leptonic final states, two same sign dilepton and trilepton channels have been explored. For semileptonic events, the search for heavy quarks is carried out using events with one lepton, and at least four jets with large transverse momenta, requiring at least one of the jet identified as originating from the fragmentation of a b quark. No significant excess of events over Standard Model expectations is observed, therefore upper mass limits are set at 95% C.L.
