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@ARTICLE{Khachatryan:318662,
      author       = {Khachatryan, Vardan and others},
      collaboration = {{CMS Collaboration}},
      title        = {{S}earch for top squark pair production in
                      compressed-mass-spectrum scenarios in proton-proton
                      collisions at $\sqrt{s} =$ 8 {T}e{V} using the $\alpha_{T}$
                      variable},
      journal      = {Physics letters / B},
      volume       = {767},
      issn         = {0370-2693},
      address      = {Amsterdam},
      publisher    = {North-Holland Publ.},
      reportid     = {PUBDB-2017-01312, CMS-SUS-14-006. CERN-EP-2016-103.
                      arXiv:1605.08993},
      pages        = {403 - 430},
      year         = {2017},
      note         = {All the figures and tables can be found at
                      http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-14-006/index.html},
      abstract     = {An inclusive search is performed for supersymmetry in final
                      states containing jets and an apparent imbalance in
                      transverse momentum, $\vec{p}^{miss}_{T}$, due to the
                      production of unobserved weakly interacting particles in pp
                      collisions at a centre-of-mass energy of 8 TeV. The data,
                      recorded with the CMS detector at the CERN LHC, correspond
                      to an integrated luminosity of 18.5 fb$^{−1}$. The
                      dimensionless kinematic variable $α_T$ is used to
                      discriminate between events with genuine
                      $\vec{p}^{miss}_{T}$ associated with unobserved particles
                      and spurious values of $\vec{p}^{miss}_{T}$ arising from jet
                      energy mismeasurements. No excess of event yields above the
                      expected standard model backgrounds is observed. The results
                      are interpreted in terms of constraints on the parameter
                      space of several simplified models of supersymmetry that
                      assume the pair production of top squarks. The search
                      provides sensitivity to a broad range of top squark
                      ($\tilde{t}$) decay modes, including the two-body decay View
                      the $\tilde{t}$ → c$\tilde{\chi}_{1}^0$, where c is a
                      charm quark and $\tilde{\chi}_{1}^0$ is the lightest
                      neutralino, as well as the four-body decay $\tilde{t}
                      →bf\bar{f′}\tilde{χ}_{1}^0$, where b is a bottom quark
                      and f and $\bar{f}$′ are fermions produced in the decay of
                      an intermediate off-shell W boson. These modes dominate in
                      scenarios in which the top squark and lightest neutralino
                      are nearly degenerate in mass. For these modes, top squarks
                      with masses as large as 260 and 225 GeV are excluded,
                      respectively, for the two- and four-body decays.},
      keywords     = {p p: colliding beams (INSPIRE) / stop: decay (INSPIRE) / p
                      p: scattering (INSPIRE) / squark: pair production (INSPIRE)
                      / stop: pair production (INSPIRE) / squark: decay modes
                      (INSPIRE) / stop: decay modes (INSPIRE) / jet: energy
                      (INSPIRE) / particle: interaction (INSPIRE) / W: off-shell
                      (INSPIRE) / supersymmetry: parameter space (INSPIRE) /
                      neutralino: mass: lower limit (INSPIRE) / neutralino: LSP
                      (INSPIRE) / transverse momentum: missing-energy (INSPIRE) /
                      CERN LHC Coll (INSPIRE) / sensitivity (INSPIRE) / kinematics
                      (INSPIRE) / background (INSPIRE) / CERN Lab (INSPIRE) /
                      charm (INSPIRE) / CMS (INSPIRE) / cross section: upper limit
                      (INSPIRE) / squark: mass: lower limit (INSPIRE) / stop:
                      mass: lower limit (INSPIRE) / experimental results (INSPIRE)
                      / 8000 GeV-cms (INSPIRE)},
      cin          = {CMS},
      ddc          = {530},
      cid          = {I:(DE-H253)CMS-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF3-611)},
      pid          = {G:(DE-HGF)POF3-611},
      experiment   = {EXP:(DE-H253)LHC-Exp-CMS-20150101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
      eprint       = {1605.08993},
      howpublished = {arXiv:1605.08993},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1605.08993;\%\%$},
      UT           = {WOS:000397861700064},
      doi          = {10.1016/j.physletb.2017.02.007},
      url          = {https://bib-pubdb1.desy.de/record/318662},
}