Measurement of the $t \bar t$ production cross section in $pp$ collisions at $\sqrt s = 8$ TeV in dilepton final states containing one $\tau$ lepton

CMS collaboration (2144 authors)Hollar, JonathanNayak, ArunaBargassa, PedrameBeirão Da Cruz E Silva, CristóvãoFaccioli, PietroFerreira Parracho, Pedro GuilhermeGallinaro, MicheleNguyen, FedericoRodrigues Antunes, JoaoSeixas, JoaoVarela, JoaoVischia, PietroLloret Iglesias, LaraDavid Tinoco Mendes, AndreMusella, PasqualeSilva, PedroPela, JoaoLeonardo, Nuno2019-02-042019-02-042014-12-12http://dx.doi.org/10.1016/j.physletb.2014.10.032http://hdl.handle.net/10400.26/26654The top-quark pair production cross section is measured in final states with one electron or muon and one hadronically decaying tau lepton from the process ttbar to (l nu[l]) (tau nu[tau]) bbbar, where l = e, mu. The data sample corresponds to an integrated luminosity of 19.6 inverse femtobarns collected with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV. The measured cross section sigma[ttbar] = 257 +/- 3 (stat) +/- 24 (syst) +/- 7 (lumi) pb, assuming a top-quark mass of 172.5 GeV, is consistent with the standard model prediction.engMeasurement of the $t \bar t$ production cross section in $pp$ collisions at $\sqrt s = 8$ TeV in dilepton final states containing one $\tau$ leptonjournal article2019-02-04