Reconstruction and identification of τ lepton decays to hadrons and ν$

CMS collaboration (2311 authors)Hollar, JonathanCalpas, BettyNayak, ArunaBargassa, PedrameBeirão Da Cruz E Silva, CristóvãoDi Francesco, AgostinoFaccioli, PietroFerreira Parracho, Pedro GuilhermeGallinaro, MicheleLeonardo, NunoLloret Iglesias, LaraNguyen, FedericoRodrigues Antunes, JoaoSeixas, JoaoToldaiev, OleksiiVadruccio, DanieleVarela, JoaoVischia, PietroDavid Tinoco Mendes, AndreSilva, PedroMusella, PasqualePela, Joao2019-02-042019-02-042016-01-29http://dx.doi.org/10.1088/1748-0221/11/01/P01019http://hdl.handle.net/10400.26/26964This paper describes the algorithms used by the CMS experiment to reconstruct and identify τ → hadrons + ν(τ) decays during Run 1 of the LHC. The performance of the algorithms is studied in proton-proton collisions recorded at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb(−)(1). The algorithms achieve an identification efficiency of 50–60%, with misidentification rates for quark and gluon jets, electrons, and muons between per mille and per cent levels.engReconstruction and identification of τ lepton decays to hadrons and ν$_τ$ at CMSjournal article2019-02-04