Lees, J. P.Poireau, V.Tisserand, V.Grauges, E.Palano, A.Eigen, G.Brown, D. N.Izen, Joseph M.Lou, XinchouBaBar Collaboration2019-07-262019-07-262018-08-162470-0010https://hdl.handle.net/10735.1/6742The decay τ⁻→ K⁻K_Sν_τ has been studied using 430×106e⁺e⁻ → τ⁺τ⁻ events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the K⁻K_S system has been measured and the spectral function has been obtained. The measured branching fraction B(τ⁻ → K⁻K_Sν_τ)=(0.739±0.011(stat)±0.020(syst))×10⁻³ is found to be in agreement with earlier measurements.enCC BY 4.0 (Attribution)©2018 The Authorshttp://creativecommons.org/licenses/by/4.0/Branching fractions (Nuclear physics)Leptons (Nuclear physics)Electron-positron interactionsHadrons—DecayarticleLees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2018. "Measurement of the spectral function for the τ- →k-KSντ decay." Physical Review D 98(3): art. 032010, doi:10.1103/PhysRevD.98.03201098