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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A. R.
dc.contributor.authorAdam, Wolfgang
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorBhopatkar, Vallary
dc.contributor.authorColafranceschi, Stefano
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorNoonan, Daniel
dc.contributor.authorRoy, Tuhin S.
dc.contributor.authorYumiceva, Francisco
dc.date.accessioned2018-09-19T17:41:55Z
dc.date.available2018-09-19T17:41:55Z
dc.date.issued2018-04-11
dc.identifier.citationSirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., . . . (CMS Collaboration). (2018). Search for vectorlike light-flavor quark partners in proton-proton collisions at s =8 TeV. Physical Review D, 97(7) doi:10.1103/PhysRevD.97.072008en_US
dc.identifier.urihttp://hdl.handle.net/11141/2586
dc.description.abstractA search is presented for heavy vectorlike quarks (VLQs) that couple only to light quarks in proton-proton collisions at s=8 TeV at the LHC. The data were collected by the CMS experiment during 2012 and correspond to an integrated luminosity of 19.7 fb-1. Both single and pair production of VLQs are considered. The single-production search is performed for down-type VLQs (electric charge of magnitude 1/3), while the pair-production search is sensitive to up-type (charge of magnitude 2/3) and down-type VLQs. Final states with at least one muon or one electron are considered. No significant excess over standard model expectations is observed, and lower limits on the mass of VLQs are derived. The lower limits range from 400 to 1800 GeV, depending on the single-production cross section and the VLQ branching fractions B to W, Z, and Higgs bosons. When considering pair production alone, VLQs with masses below 845 GeV are excluded for B(W)=1.0, and below 685 GeV for B(W)=0.5, B(Z)=B(H)=0.25. The results are more stringent than those previously obtained for single and pair production of VLQs coupled to light quarks.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is made available in accordance with publisher’s policy. It may be subject to U.S. copyright law.en_US
dc.rights.urihttps://journals.aps.org/open_access.htmlen_US
dc.titleSearch for vectorlike light-flavor quark partners in proton-proton collisions at ffiffi s p = 8 TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevD.97.072008


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