Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.201801
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Funding
- Swedish Research Council (VR) [637-2013-475]
- IISN-Belgium [4.4511.06, 4.4505.86, 4.4514.08]
- Communaute Francaise de Belgique through the ARC program
- Mandat d'Impulsion Scientifique of the F.R.S.-FNRS
- ERC [267985 DaMeSyFla]
- Italian PRIN [2010YJ2NYW_003]
- SNF Sinergia [CRSII2-141847]
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The LHC searches for light compressed top squarks have resulted in considerable bounds in the case where the top squark decays to a neutralino and a charm quark. However, in the case where the top squark 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 top-squark-neutralino mass plane, still allowing for top squark masses in the range 90-140 GeV. In this Letter we propose a new monojetlike search for light top squarks, optimized for the four-body decay mode, in which at least one b-tagged jet is required. We show that, by using the existing 8 TeV LHC data set, such a search would cover the entire unconstrained region. Moreover, in the process of validating our tools against an ATLAS monojet search, we show that the existing limit can be extended to exclude also top squark masses below 100 GeV.
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