{ "id": "1401.2942", "version": "v2", "published": "2014-01-13T18:24:58.000Z", "updated": "2014-06-10T16:40:46.000Z", "title": "Observation of the associated production of a single top quark and a W boson in pp collisions at sqrt(s) = 8 TeV", "authors": [ "CMS Collaboration" ], "comment": "Replaced with published version. Added journal reference and DOI", "journal": "Phys. Rev. Lett. 112 (2014) 231802", "doi": "10.1103/PhysRevLett.112.231802", "categories": [ "hep-ex" ], "abstract": "The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2 inverse femtobarns of proton-proton collisions at sqrt(s) = 8 TeV recorded by the CMS experiment at the LHC. Events with two leptons and a jet originating from a b quark are selected. A multivariate analysis based on kinematic and topological properties is used to separate the signal from the dominant t t-bar background. An excess consistent with the signal hypothesis is observed, with a significance which corresponds to 6.1 standard deviations above a background-only hypothesis. The measured production cross section is 23.4 +- 5.4 pb, in agreement with the standard model prediction.", "revisions": [ { "version": "v2", "updated": "2014-06-10T16:40:46.000Z" } ], "analyses": { "subjects": [ "13.85.Ni", "12.15.Hh", "13.85.Qk", "14.65.Ha", "12.15.Mm", "12.60.-i" ], "keywords": [ "associated production", "pp collisions", "measured production cross section", "standard model prediction", "proton-proton collisions" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review Letters", "year": 2014, "month": "May", "volume": 112, "number": 17, "pages": 171802 }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1276827, "adsabs": "2014PhRvL.112q1802C" } } }