τ K<inf>s</inf>π<sup>-</sup> v<inf>τ</inf> and τ K<sup>-</sup> ηV<inf>τ</inf> decays: A combined analysis

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Abstract

The decay spectra of τ - Ksπ- vτ and τ- K- ηVτ decays are studied in a combined analysis using a dispersive representation of the required vector and scalar form factors. The K*(1410) resonance parameters are extracted with improved precision as compared to previous studies, with the findings MK*' =1 304±17 MeV and ΓK*'=171±62 MeV. Isospin violations in the form factor slopes are investigated as the K- π0 vector form factor enters the description of the decay τ-K- ηvτ. In this respect, the spectrum of the transition τ K- π0vτwould be extremely useful.
Original languageEnglish
Pages (from-to)398-406
JournalJournal of University of Science and Technology of China
Volume46
Issue number5
DOIs
Publication statusPublished - 1 May 2016

Keywords

  • Dispersive analysis
  • Isospin violation
  • K*(1410) resonance
  • Scalar and vector form factors
  • Tau decays

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