Measurement of the Pseudoscalar Decay Constant fDs Using Ds+ -> tau+ nu, tau+ -> rho+ anti-nu Decays

Abstract

Analyzing 600/pb of e+e- collisions at 4170 MeV center-of-mass energy with the CLEO-c detector, we measure the branching fraction B(Ds+ -> tau+ nu)=(5.52\pm 0.57\pm 0.21)% using the tau+ -> rho^+ anti-nu decay mode. Combining with other CLEO measurements of B(Ds+ -> tau+ nu) we determine the pseudoscalar decay constant fDs = (259.7\pm 7.8\pm 3.4) MeV consistent with the value obtained from our Ds+ -> mu+ nu measurement of (257.6\pm 10.3\pm 4.3) MeV. Combining these measurements we find a value of fDs=(259.0 \pm 6.2\pm 3.0) MeV, that differs from the most accurate prediction based on unquenched lattice gauge theory of (241\pm 3) MeV by 2.4 standard deviations. We also present the first measurements of B(Ds+ -> K0 pi+ pi0)=(1.00\pm0.18\pm 0.04)%, and B(Ds+ -> pi+ pi0 pi0)=(0.65\pm0.13\pm 0.03)%, and measure a new value for B(Ds+ -> eta rho+)=(8.9\pm0.6\pm0.5)%.

25 pages, 16 figures, submitted to Physical Review D; v2 includes pi+ pi0 pi0 Dalitz plot

References in corpus (20)

• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• High Precision determination of the pi, K, D and D_s decay constants from lattice QCD
• An improved calculation of the isospin-symmetry-breaking corrections to superallowed Fermi beta decay
• High-Statistics Study of the tau^- -> pi^- pi^0 nu_tau Decay
• Charmed meson decay constants in three-flavor lattice QCD
• Dalitz Analysis of the Decay $D^0\to K^{-}{\pi }^{+}{\pi }^0$
• Measurement of Charm Production Cross Sections in e+e- Annihilation at Energies between 3.97 and 4.26 GeV
• Accumulating evidence for nonstandard leptonic decays of D_s mesons
• The Cleo Rich Detector
• Measurement of B(Ds+ -->ell+ nu) and the Decay Constant fDs From 600/pb of e+e- Annihilation Data Near 4170 MeV
• Improved Measurement of Absolute Branching Fraction of Ds to tau nu
• Can scalar leptoquarks explain the f_{D_s} puzzle?
• Measurement of B(Ds -> munu)
• Constraints on charged Higgs bosons from D(s)+- -> mu+- nu and D(s)+- -> tau+- nu
• Measuring cal B(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_D^+
• Search for CP Violation in the Dalitz-Plot Analysis of D+/- -> K+ K- pi+/-
• Large enhancement of D -> e nu and Ds -> e nu in R Parity violating SUSY models
• B Meson Decays
• R-parity violating supersymmetry, B_s mixing, and D_s -> l nu
• Upper bounds on $f_D$ and $f_{D_s}$ from two-point correlation function in QCD

Cited by in corpus (50)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• QCD and strongly coupled gauge theories: challenges and perspectives
• 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
• Precision measurement and interpretation of inclusive $W^{+}$, $W^{-}$ and $Z/{\gamma }^{\ast }$ production cross sections with the ATLAS detector
• B- and D-meson decay constants from three-flavor lattice QCD
• Update: Precision D_s decay constant from full lattice QCD using very fine lattices
• Two-body hadronic charmed meson decays
• Indirect searches for sterile neutrinos at a high-luminosity Z-factory
• Recent Progress in Leptonic and Semileptonic Decays of Charmed Hadrons
• The decay constants ${\mathbf{f}}_{\mathbf{D}}$ and ${\mathbf{f}}_{{\mathbf{D}}_{\mathbf{s}}}$ in the continuum limit of ${\mathbf{N}}_{\mathbf{f}}=2+1$ domain wall lattice QCD
• Measurements of branching fractions of leptonic and hadronic Ds+ meson decays and extraction of the Ds+ meson decay constant
• Wave functions and decay constants of $B$ and $D$ mesons in the relativistic potential model
• Impact of sterile neutrinos on nuclear-assisted cLFV processes
• |V_cd| from D Meson Leptonic Decays
• Analyses of decay constants and light-cone distribution amplitudes for s-wave heavy meson
• Nonleptonic two-body decays of charmed mesons
• Measurement of the Absolute Branching Fractions for $D_s^{-}\to {\ell }^{-}{\bar{\nu }}_{\ell }$ and Extraction of the Decay Constant $f_{D_s}$
• Improved Measurement of Absolute Hadronic Branching Fractions of the Ds+ Meson
• The CKM Parameters
• Determination of the pseudoscalar decay constant $f_{D_s^{+}}$ via $D_s^{+}\to {\mu }^{+}{\nu }_{\mu }$
• Mass spectra and decay properties of $D_s$ Meson in a relativistic Dirac formalism
• In-flight cLFV conversion: $e-\mu$, $e-\tau$ and $\mu -\tau$ in minimal extensions of the Standard Model with sterile fermions
• Measurement of the Dynamics of the Decays $D_s^{+}\to {\eta }^{(\prime )}{e}^{+}{\nu }_e$
• Measurement of the absolute branching fractions for purely leptonic $D_s^{+}$ decays
• Measurement of the Absolute Branching Fraction of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to e^{+}{\nu }_e{\bar{\nu }}_{\tau }$
• Leptonic decay of Heavy-light Mesons in a QCD Potential Model
• Measurement of the absolute branching fraction of inclusive semielectronic $D_s^{+}$ decays
• Constraining New Physics with D meson decays
• Determination of $f_{+}^K(0)$ and Extraction of $|V_{cs}|$ from Semileptonic $D$ Decays
• Light quark mass dependence of the $D$ and $D_s$ decay constants
• Interference phenomena in the decay $D_s^{+}\to \eta {\pi }^0{\pi }^{+}$ induced by the $a_0^0(980)-f_0(980)$ mixing
• Precision Measurements of $D_s^{+}\to \eta e^{+}{\nu }_e$ and $D_s^{+}\to {\eta }^{\prime }{e}^{+}{\nu }_e$
• Measuring V_ub and probing SUSY with double ratios of purely leptonic decays of B and D mesons
• Measurement of the branching fraction of leptonic decay $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to {\pi }^{+}{\pi }^0{\bar{\nu }}_{\tau }$
• Strong isospin symmetry breaking in light scalar meson production
• Role of the scalar $f_0(980)$ in the process $D_s^{+}\to {\pi }^{+}{\pi }^0{\pi }^0$
• Search for the decay $D_s^{+}\to \omega e^{+}\nu$
• Branching fractions and polarizations of $D\to V(\omega ,\rho ,K^{\ast })\ell {\nu }_{\ell }$ within QCD LCSR
• Extended nonlocal chiral-quark model for the D- and B-meson weak-decay constants
• Updated measurement of the branching fraction of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to {\pi }^{+}{\bar{\nu }}_{\tau }$
• Improved measurement of the branching fraction of $D_s^{+}\to {\mu }^{+}{\nu }_{\mu }$
• Leptonic decays of D_s and B^+ mesons in supersymmetric standard model with R-parity violating interactions
• Measurement of the branching fraction of $D_s^{+}\to {\ell }^{+}{\nu }_{\ell }$ via $e^{+}{e}^{-}\to D_s^{\ast +}{D}_s^{\ast -}$
• Constraints on R-parity violating interactions in supersymmetric standard model from leptonic decays of D_s and B^+ mesons
• Can Flavor Physics Hint at Distinctive Signals for R-parity Violation at the LHC?
• Experimental Status of the CKM Matrix
• Testing lepton flavor universality in terms of data of BES III and charm-tau factory
• The theoretical study of $D_s^{+}\to {\pi }^{+}{\pi }^0{\pi }^0$
• Advances in Open Charm Physics at CLEO-c