$D_s$ Inclusive Decays

TL;DR

This paper predicts inclusive branching fractions for $D_s$ decays using an isospin statistical model, aiding understanding of decay mechanisms and comparing predictions with experimental data.

Contribution

It introduces a method combining existing branching fractions with an isospin model to predict inclusive decay rates for $D_s$ mesons, including uncertainty estimates.

Findings

Predicted inclusive branching fractions align with experimental data.

Model comparisons provide insights into decay mechanisms.

Uncertainty estimates enhance prediction reliability.

Abstract

The availability of branching fractions for a large majority of $D_s$ decays permits the prediction of inclusive branching fractions. This is achieved with the help of a modest amount of input from an isospin statistical model applied to non-resonant multibody $D_s$ decays. A systematic uncertainty in these mostly small branching ratios is estimated by comparing predictions of this model with those of a model involving quark-antiquark pair production. The calculated inclusive branching fractions can be compared with data (for example, from a large sample of $D_s^+ D_s^{*-} + D_s^{*+} D_s^-$ obtained by the CLEO Collaboration) and examined for specific final states which can shed light on strong and weak decay mechanisms.