Helicity and partial wave amplitude analysis of D -> K^* ρdecay

Abstract

We have carried out an analysis of helicity and partial-wave amplitudes for the process D -> K^* ρin the factorization approximation using several models for the form factors. All the models, with the exception of one, generate partial-wave amplitudes with the hierarchy $\mid S\mid >\mid P\mid >\mid D\mid$. The one exception gives $\mid S\mid >\mid D\mid >\mid P\mid$. Even though in most models the D-wave amplitude is an order of magnitude smaller than the S-wave amplitude, its effect on the longitudinal polarization could be as large as 30%. Due to a misidentification of the partial-wave amplitudes in terms of the Lorentz structures in the relevant literature, we cast doubt on the veracity of the listed data, particularly the partial-wave branching ratios. (PACS numbers: 13.25.-k, 13.25.Ft)

13 pages, 2 tables no figures

References in corpus (2)

• Measurement of the form-factor ratios for D+ --> K* l nu
• On Complete Sets of Polarization Observables

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