Measurement of the spectral function for the ${\tau }^{-}\to K^{-}{K}_S{\nu }_{\tau }$ decay

Abstract

The decay ${\tau }^{-}\to K^{-}{K}_S{\nu }_{\tau }$ has been studied using $430\times 10^6$ $e^{+}{e}^{-}\to {\tau }^{+}{\tau }^{-}$ 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 $\mathcal{B}({\tau }^{-}\to K^{-}{K}_S{\nu }_{\tau })=(0.739\pm 0.011(stat.)\pm 0.020(syst.))\times 10^{-3}$ is found to be in agreement with earlier measurements.

12 pages, 13 figures, submitted to Phys. Rev. D

References in corpus (11)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The BABAR Detector
• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• High-Statistics Study of the tau^- -> pi^- pi^0 nu_tau Decay
• Study of e+e- --> pi+ pi- pi0 process using initial state radiation with BABAR
• Study of tau- -> K_S pi- nu_tau decay at Belle
• Precision Measurement of the e+e- --> K+K-(gamma) Cross Section with the Initial-State Radiation Method at BaBar
• Cross sections for the reactions $e^{+}{e}^{-}\to K_S^0{K}_L^0$, $K_S^0{K}_L^0{\pi }^{+}{\pi }^{-}$, $K_S^0{K}_S^0{\pi }^{+}{\pi }^{-}$, and $K_S^0{K}_S^0{K}^{+}{K}^{-}$ from events with initial-state radiation
• Measurements of Branching Fractions of $\tau$ Lepton Decays with one or more $K_S^0$
• Measurement of the ${\mathbf{e}}^{+}{\mathbf{e}}^{-}\to {\mathbf{K}}^{+}{\mathbf{K}}^{-}$ cross section in the energy range $\sqrt{\mathbf{s}}=1.05-2.0$ GeV

Cited by in corpus (16)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Kaon electromagnetic form factors in dispersion theory
• The strong coupling from an improved $\tau$ vector isovector spectral function
• Effective-field theory analysis of the ${\tau }^{-}\to (K\pi {)}^{-}{\nu }_{\tau }$ decays
• Contributions for the kaon pair from $\rho (770)$, $\omega (782)$ and their excited states in the $B\to K\bar{K}h$ decays
• Effective-field theory analysis of the ${\tau }^{-}\to K^{-}({\eta }^{(\prime )},K^0){\nu }_{\tau }$ decays
• ${\tau }^{-}\to {\nu }_{\tau }{M}_1{M}_2$, with $M_1,M_2$ pseudoscalar or vector mesons
• Data-based determination of the isospin-limit light-quark-connected contribution to the anomalous magnetic moment of the muon
• Spectral-weight sum rules for the hadronic vacuum polarization
• Isoscalar and isovector kaon form factors from $e^{+}{e}^{-}$ and $\tau$ data
• Resonances $\rho (1450{)}^{+}$ and $\rho (1700{)}^{+}$ in $B\to DKK$ decays
• Low-mass enhancement of kaon pairs in $B^{+}\to {\bar{D}}^{(\ast )0}{K}^{+}{\bar{K}}^0$ and $B^0\to D^{(\ast )-}{K}^{+}{\bar{K}}^0$ decays
• Excited $\rho$ mesons in $B_c\to {\psi }^{{(}^{\prime })}K{K}_S$ decays
• Tau decays into two mesons: an overview
• Evaluation of the three-flavor quark-disconnected contribution to the muon anomalous magnetic moment from experimental data