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oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/142672026-10-18T20:29:03Zopenairedrivercom_ebyu_10000col_ebyu_10001

Measurement of the Z / γ∗→ ττ cross section in pp collisions at √s=13TeV and validation of τ lepton analysis techniquesSirunyan, A.M.Tumasyan, A.Adam, W.Ambrogi, F.Asilar, E.Bergauer, T.Brandstetter, J.Brondolin, E.Dragicevic, M.Erö, J.Escalante Del Valle, A.Flechl, M.Friedl, M.Frühwirth, R.Ghete, V.M.Grossmann, J.Hrubec, J.Jeitler, M.König, A.Krammer, N.Krätschmer, I.Liko, D.Madlener, T.Mikulec, I.Pree, E.Rad, N.Rohringer, H.Schieck, J.Schöfbeck, R.Spanring, M.Spitzbart, D.Taurok, A.Waltenberger, W.Wittmann, J.Wulz, C.-E.Zarucki, M.Chekhovsky, V.Mossolov, V.Gonzalez, J. SuarezDe Wolf, E.A.Di Croce, D.Janssen, X.Lauwers, J.Van De Klundert, M.Van Haevermaet, H.Van Mechelen, P.Van Remortel, N.Zeid, S. AbuBlekman, F.D’hondt, J.Elementary particlesQuantum theoryTellurium compoundsAnalysis techniquesBranching fractionsIntegrated luminosityLepton productionsMeasurements ofNext-to-next-to-leading ordersPerturbative quantum chromodynamicsReconstruction efficiencyReconstruction energyThe standard modelUncertainty analysisA measurement is presented of the Z / γ∗→ ττ cross section in pp collisions at s=13TeV, using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 2.3fb-1. The product of the inclusive cross section and branching fraction is measured to be σ(pp→Z/γ∗+X)B(Z/γ∗→ττ)=1848±12(stat)±67(syst \,+\,lumi) pb, in agreement with the standard model expectation, computed at next-to-next-to-leading order accuracy in perturbative quantum chromodynamics. The measurement is used to validate new analysis techniques relevant for future measurements of τ lepton production. The measurement also provides the reconstruction efficiency and energy scale for τ decays to hadrons+ντ final states, determined with respective relative uncertainties of 2.2 and 0.9%. © 2018, CERN for the benefit of the CMS collaboration.Springer Nature2018Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/14267https://doi.org/10.1140/epjc/s10052-018-6146-91434-6044enEuropean Physical Journal Cinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/14267