Resonance structure of tau->Kpipi decays

Abstract

Using a sample of 4.7/fb integrated luminosity accumulated with the CLEO II detector at the Cornell Electron Storage Ring (CESR), we investigate the mass spectrum and resonant structure in tau->Kpipi decays. We measure the relative fractions of K1(1270) and K1(1400) resonances in these decays, as well as the K1 masses and widths. Our fitted K1 resonances are somewhat broader than previous hadroproduction measurements, and in agreement with recent LEP results from tau decay. The larger central value of our measured width supports models which attribute the small tau->Kpipi branching fraction to larger K1 widths than are presently tabulated. We also determine the Ka-Kb mixing angle theta_K.

References in corpus (1)

• A Study of Three-Prong Tau Decays with Charged Kaons

Cited by in corpus (18)

• Toward the excited meson spectrum of dynamical QCD
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• Hadronic Charmed Meson Decays Involving Axial Vector Mesons
• Clues for the existence of two $K_1(1270)$ resonances
• Branching Fractions of tau Leptons to Three Charged Hadrons
• Measurement of the branching fractions and the invariant mass distributions for tau^- -> h^-h^+h^-nu_tau decays
• The strong decays of K1 resonances
• Observation of the Semileptonic $D^{+}$ Transition into an Axial-Vector Meson ${\bar{K}}_1(1270{)}^0$
• Excited Scalar and Pseudoscalar Mesons in the Extended Linear Sigma Model
• Regarding the axial-vector mesons
• Study of the K+ pi+ pi- Final State in B+ -> J/psi K+ pi+ pi- and B+ -> psi-prime K+ pi+ pi-
• CP violation in tau -> K pi pi nu_tau
• Strange axial-vector mesons mixing angle
• ${\tau }^{-}\to {\nu }_{\tau }{M}_1{M}_2$, with $M_1,M_2$ pseudoscalar or vector mesons
• Observation of $D^0\to K_1(1270{)}^{-}{e}^{+}{\nu }_e$
• Investigation of Mass and Decay Characteristics of the Light-Strange Tetraquark
• Probing sensitivity to charged scalars through partial differential widths: $\tau \to K\pi \pi {\nu }_{\tau }$ decays
• CLEO Contributions to Tau Physics