Speaker
Dr
Christoffer Petersson
(ULB-Brussels/Chalmers-Gothenburg)
Description
The LHC searches for light compressed stop squarks have resulted in considerable bounds in the
case where the stop decays to a neutralino and a charm quark. However, in the case where the
stop decays to a neutralino, a bottom quark and two fermions via an off-shell W-boson, there is
currently a significant unconstrained region in the stop-neutralino mass plane, still allowing for stop
masses in the range 90–140 GeV. In this talk I will propose a new monojet-like search for light
stops, optimized for the four-body decay mode, in which at least one b-tagged jet is required. I will
show that, already by using the existing 8 TeV LHC data set, such a search would cover the entire
unconstrained region.
additional information
The talk will be based on the paper ``Monojet-like searches for top squarks with a b-tag´´, done in collaboration with Roberto Franceschini, Riccardo Torre and Gabriele Ferretti, and published in Physical Review Letters (PRL 114, 201801),
http://journals.aps.org/prl/pdf/10.1103/PhysRevLett.114.201801
Author
Dr
Christoffer Petersson
(ULB-Brussels/Chalmers-Gothenburg)
