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@ARTICLE{Khachatryan:289157,
      author       = {Khachatryan, Vardan and others},
      collaboration = {{CMS Collaboration}},
      title        = {{M}easurement of top quark polarisation in t-channel single
                      top quark production},
      reportid     = {PUBDB-2015-05281, CMS-TOP-13-001. CERN-PH-EP-2015-282.
                      arXiv:1511.02138},
      year         = {2015},
      abstract     = {A first measurement of the top quark spin asymmetry,
                      sensitive to the top quark polarisation, in t-channel single
                      top quark production is presented. It is based on a sample
                      of pp collisions at a centre-of-mass energy of 8 TeV
                      corresponding to an integrated luminosity of 19.7
                      inverse-femtobarns. A high-purity sample of t-channel single
                      top quark events with an isolated muon is selected. Signal
                      and background components are estimated using a fit to data.
                      A differential cross section measurement, corrected for
                      detector effects, of an angular observable sensitive to the
                      top quark polarisation is performed. The differential
                      distribution is used to extract a top quark spin asymmetry
                      of 0.26 +/- 0.03 (stat) +/- 0.10 (syst), which is compatible
                      with a p-value of $4.6\%$ with the standard model prediction
                      of 0.44.},
      keywords     = {p p: scattering (INSPIRE) / p p: colliding beams (INSPIRE)
                      / top: polarization (INSPIRE) / top: single production
                      (INSPIRE) / top: spin (INSPIRE) / spin: asymmetry (INSPIRE)
                      / differential cross section: measured (INSPIRE) /
                      background (INSPIRE) / final state: ((n)jet lepton)
                      (INSPIRE) / CMS (INSPIRE) / CERN LHC Coll (INSPIRE) /
                      experimental results (INSPIRE) / 8000 GeV-cms (INSPIRE)},
      cin          = {CMS},
      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)25 / PUB:(DE-HGF)15},
      eprint       = {1511.02138},
      howpublished = {arXiv:1511.02138},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1511.02138;\%\%$},
      url          = {https://bib-pubdb1.desy.de/record/289157},
}