Search for top squarks in multijet events with large missing momentum in proton-proton collisions at 8 TeV

Collaboration
2013
25 pages
Report number:
  • CMS-PAS-SUS-13-015
Experiments:

Citations per year

20132016201920222023051015
Abstract:
A search for pairs of top squarks decaying to a top quark and a stable, weakly interacting, massive particle is presented. The search selects events containing multiple jets, with at least one identified as originating from a b-quark, and large missing transverse momentum. The search also employs a novel top quark tagging algorithm for identifying a top quark candidate decaying hadronically. It is based on 19.4 fb1^{-1} of proton-proton collision data collected at a center-of-mass energy of 8 TeV by the CMS detector at the Large Hadron Collider. The observed event yields are consistent with the SM expectations. Assuming both top squarks decay always into a top quark and a weakly interacting, neutral particle~(χ~10\tilde{\chi}_1^0), the production of top squarks with mass less than 535 GeV is excluded at 95\% confidence-level for χ~10\tilde{\chi}_1^0 masses less than 10 GeV.
Note:
  • Preliminary results
  • Data
  • p p: scattering
  • stop: pair production
  • stop: decay
  • WIMP
  • transverse momentum: missing-energy
  • jet: multiple production
  • jet: bottom
  • momentum: missing-energy
  • top: particle identification